diff --git a/Makefile b/Makefile
index 2b5d5b2..78bf421 100644
--- a/Makefile
+++ b/Makefile
@@ -25,7 +25,7 @@ CFLAGS += -DPTK_VERSION_PATCH=0
 
 INCLUDE = include
 SRC = src
-CFLAGS += -I$(INCLUDE) -I$(SRC)
+CFLAGS += -I$(INCLUDE) -iquote$(SRC)
 
 BIN = target
 
diff --git a/include/ptk.h b/include/ptk.h
index d6e6e06..4877090 100644
--- a/include/ptk.h
+++ b/include/ptk.h
@@ -1,9 +1,9 @@
 #ifndef PTK_PTK_H_
 #define PTK_PTK_H_
 
-#include <ptk_color.h>
-#include <ptk_list.h>
-#include <ptk_vec.h>
+#include "ptk_color.h"
+#include "ptk_list.h"
+#include "ptk_vec.h"
 
 #include <stdbool.h>
 #include <stdint.h>
diff --git a/src/ptk.c b/src/ptk.c
index fc9df4a..7ca0938 100644
--- a/src/ptk.c
+++ b/src/ptk.c
@@ -1,14 +1,14 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk.h>
-#include <ptk_log.h>
-#include <ptk_list.h>
-#include <ptk_option.h>
+#include "ptk.h"
+#include "ptk_list.h"
+#include "ptk_log.h"
+#include "ptk_option.h"
 
-#include <ptk_vk/components.h>
-#include <ptk_vk/device.h>
-#include <ptk_vk/init.h>
-#include <ptk_vk/utils.h>
+#include "ptk_vk/components.h"
+#include "ptk_vk/device.h"
+#include "ptk_vk/init.h"
+#include "ptk_vk/utils.h"
 
 #include <vulkan/vulkan_core.h>
 #ifndef GLFW_INCLUDE_VULKAN
diff --git a/src/ptk_color.c b/src/ptk_color.c
index 3c0abd2..e023a9a 100644
--- a/src/ptk_color.c
+++ b/src/ptk_color.c
@@ -1,4 +1,4 @@
-#include <ptk_color.h>
+#include "ptk_color.h"
 
 #include <math.h>
 
diff --git a/src/ptk_list.c b/src/ptk_list.c
index 87547fa..5d24bda 100644
--- a/src/ptk_list.c
+++ b/src/ptk_list.c
@@ -1,6 +1,6 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_list.h>
+#include "ptk_list.h"
 
 #include <errno.h>
 #include <stdlib.h>
diff --git a/src/ptk_list.h b/src/ptk_list.h
index 6fa8910..9c73651 100644
--- a/src/ptk_list.h
+++ b/src/ptk_list.h
@@ -4,8 +4,8 @@
 #define PTK_PTK_LIST_H_
 
 #include <stdbool.h>
-#include <stdlib.h>
 #include <stdint.h>
+#include <stdlib.h>
 
 #define PTK_LIST(T) struct PtkList_##T
 
diff --git a/src/ptk_log.c b/src/ptk_log.c
index 7e3cbf5..70dffc5 100644
--- a/src/ptk_log.c
+++ b/src/ptk_log.c
@@ -1,6 +1,6 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_log.h>
+#include "ptk_log.h"
 
 #include <stdio.h>
 
diff --git a/src/ptk_vk/buffer.c b/src/ptk_vk/buffer.c
index afc5555..3e03c24 100644
--- a/src/ptk_vk/buffer.c
+++ b/src/ptk_vk/buffer.c
@@ -1,8 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/buffer.h>
+#include "ptk_vk/buffer.h"
 
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
 #include <string.h>
 
diff --git a/src/ptk_vk/buffer.h b/src/ptk_vk/buffer.h
index 57d22d8..7a3d8a6 100644
--- a/src/ptk_vk/buffer.h
+++ b/src/ptk_vk/buffer.h
@@ -3,9 +3,9 @@
 #ifndef PTK_PTK_VK_BUFFER_H_
 #define PTK_PTK_VK_BUFFER_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk_option.h"
 
-#include <ptk_option.h>
+#include <vulkan/vulkan_core.h>
 
 typedef struct {
     VkBuffer buffer;
diff --git a/src/ptk_vk/command_buffers.c b/src/ptk_vk/command_buffers.c
index bfa1246..937570f 100644
--- a/src/ptk_vk/command_buffers.c
+++ b/src/ptk_vk/command_buffers.c
@@ -1,8 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/command_buffers.h>
+#include "ptk_vk/command_buffers.h"
 
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
 PTK_OPTION(VkCommandBufferList) vk_allocate_command_buffers(VkDevice dev, VkCommandPool command_pool, uint32_t max_frames_in_flight) {
     VkCommandBufferList ret = PTK_LIST_NEW(VkCommandBuffer, max_frames_in_flight);
diff --git a/src/ptk_vk/command_buffers.h b/src/ptk_vk/command_buffers.h
index 9aef829..c05341c 100644
--- a/src/ptk_vk/command_buffers.h
+++ b/src/ptk_vk/command_buffers.h
@@ -3,10 +3,10 @@
 #ifndef PTK_PTK_VK_COMMAND_BUFFERS_H_
 #define PTK_PTK_VK_COMMAND_BUFFERS_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk_list.h"
+#include "ptk_option.h"
 
-#include <ptk_list.h>
-#include <ptk_option.h>
+#include <vulkan/vulkan_core.h>
 
 PTK_LIST_DEFINE(VkCommandBuffer);
 typedef PTK_LIST(VkCommandBuffer) VkCommandBufferList;
diff --git a/src/ptk_vk/command_pool.c b/src/ptk_vk/command_pool.c
index f4b1837..7e8dc87 100644
--- a/src/ptk_vk/command_pool.c
+++ b/src/ptk_vk/command_pool.c
@@ -1,9 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/command_pool.h>
+#include "ptk_vk/command_pool.h"
 
-#include <ptk_vk/device.h>
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
 PTK_OPTION(VkCommandPool) vk_create_command_pool(VkDevice dev, uint32_t graphics_queue_family_index) {
     VkCommandPool ret;
diff --git a/src/ptk_vk/command_pool.h b/src/ptk_vk/command_pool.h
index b5feeb3..8744a36 100644
--- a/src/ptk_vk/command_pool.h
+++ b/src/ptk_vk/command_pool.h
@@ -3,9 +3,9 @@
 #ifndef PTK_PTK_VK_COMMAND_POOL_H_
 #define PTK_PTK_VK_COMMAND_POOL_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk_option.h"
 
-#include <ptk_option.h>
+#include <vulkan/vulkan_core.h>
 
 PTK_OPTION_DEFINE(VkCommandPool);
 
diff --git a/src/ptk_vk/components.c b/src/ptk_vk/components.c
index 78102ad..1057c2a 100644
--- a/src/ptk_vk/components.c
+++ b/src/ptk_vk/components.c
@@ -1,9 +1,9 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk.h>
-#include <ptk_log.h>
-#include <ptk_vk/components.h>
-#include <ptk_vk/init.h>
+#include "ptk_vk/components.h"
+#include "ptk_vk/init.h"
+
+#include "ptk.h"
 
 #include <GLFW/glfw3.h>
 #include <string.h>
diff --git a/src/ptk_vk/components.h b/src/ptk_vk/components.h
index 3f793e4..81d8e8a 100644
--- a/src/ptk_vk/components.h
+++ b/src/ptk_vk/components.h
@@ -3,8 +3,8 @@
 #ifndef PTK_PTK_VK_COMPONENTS_H_
 #define PTK_PTK_VK_COMPONENTS_H_
 
-#include <ptk.h>
-#include <ptk_list.h>
+#include "ptk.h"
+#include "ptk_list.h"
 
 typedef struct {
     PtkPos pos;
diff --git a/src/ptk_vk/descriptors.c b/src/ptk_vk/descriptors.c
index af4c6e3..9d94b6e 100644
--- a/src/ptk_vk/descriptors.c
+++ b/src/ptk_vk/descriptors.c
@@ -1,8 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/descriptors.h>
+#include "ptk_vk/descriptors.h"
 
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
 PTK_OPTION(VkDescriptorSetLayout) vk_create_descriptor_set_layout(VkDevice dev) {
     VkDescriptorSetLayout ret;
diff --git a/src/ptk_vk/descriptors.h b/src/ptk_vk/descriptors.h
index d05d15b..faf9b6e 100644
--- a/src/ptk_vk/descriptors.h
+++ b/src/ptk_vk/descriptors.h
@@ -3,14 +3,13 @@
 #ifndef PTK_PTK_VK_DESCRIPTORS_H_
 #define PTK_PTK_VK_DESCRIPTORS_H_
 
+#include "ptk_vk/uniform_buffers.h"
+
+#include "ptk_list.h"
+#include "ptk_option.h"
+
 #include <vulkan/vulkan_core.h>
 
-#include <ptk_vk/uniform_buffers.h>
-
-#include <ptk.h>
-#include <ptk_list.h>
-#include <ptk_option.h>
-
 PTK_OPTION_DEFINE(VkDescriptorSetLayout);
 PTK_OPTION_DEFINE(VkDescriptorPool);
 PTK_LIST_DEFINE(VkDescriptorSet);
diff --git a/src/ptk_vk/device.c b/src/ptk_vk/device.c
index 522e0f2..d384531 100644
--- a/src/ptk_vk/device.c
+++ b/src/ptk_vk/device.c
@@ -1,19 +1,18 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/device.h>
+#include "ptk_vk/device.h"
 
-#include <ptk_vk/init.h>
-#include <ptk_vk/swapchain.h>
-#include <ptk_vk/utils.h>
+#include "ptk_vk/swapchain.h"
+#include "ptk_vk/utils.h"
+
+#include "ptk_array.h"
+#include "ptk_list.h"
+#include "ptk_log.h"
+#include "ptk_option.h"
 
 #include <stdbool.h>
 #include <string.h>
 
-#include <ptk_array.h>
-#include <ptk_list.h>
-#include <ptk_log.h>
-#include <ptk_option.h>
-
 VkQueue g_graphics_queue;
 VkQueue g_present_queue;
 
diff --git a/src/ptk_vk/device.h b/src/ptk_vk/device.h
index 44a42e8..ff3b89a 100644
--- a/src/ptk_vk/device.h
+++ b/src/ptk_vk/device.h
@@ -3,14 +3,14 @@
 #ifndef PTK_PTK_VK_DEVICE_H_
 #define PTK_PTK_VK_DEVICE_H_
 
-#include <ptk_array.h>
-#include <ptk_option.h>
+// for PTK_ARRAY(constcharptr)
+#include "ptk_vk/instance.h"
+
+#include "ptk_array.h"
+#include "ptk_option.h"
 
 #include <vulkan/vulkan_core.h>
 
-// for PTK_ARRAY(constcharptr)
-#include <ptk_vk/instance.h>
-
 PTK_OPTION_DEFINE(uint32_t);
 
 typedef struct {
diff --git a/src/ptk_vk/init.c b/src/ptk_vk/init.c
index 39cebdb..c6d4a8f 100644
--- a/src/ptk_vk/init.c
+++ b/src/ptk_vk/init.c
@@ -1,24 +1,27 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/init.h>
+#include "ptk_vk/init.h"
 
-#include <ptk_vk/buffer.h>
-#include <ptk_vk/command_pool.h>
-#include <ptk_vk/components.h>
-#include <ptk_vk/descriptors.h>
-#include <ptk_vk/device.h>
-#include <ptk_vk/instance.h>
-#include <ptk_vk/physical_device.h>
-#include <ptk_vk/pipeline.h>
-#include <ptk_vk/render_pass.h>
-#include <ptk_vk/swapchain.h>
-#include <ptk_vk/uniform_buffers.h>
-#include <ptk_vk/utils.h>
+#include "ptk_vk/buffer.h"
+#include "ptk_vk/command_buffers.h"
+#include "ptk_vk/command_pool.h"
+#include "ptk_vk/components.h"
+#include "ptk_vk/descriptors.h"
+#include "ptk_vk/device.h"
+#include "ptk_vk/instance.h"
+#include "ptk_vk/physical_device.h"
+#include "ptk_vk/pipeline.h"
+#include "ptk_vk/render_pass.h"
+#include "ptk_vk/swapchain.h"
+#include "ptk_vk/sync_objects.h"
+#include "ptk_vk/uniform_buffers.h"
+#include "ptk_vk/utils.h"
+
+#include "ptk_array.h"
+#include "ptk_list.h"
+#include "ptk_log.h"
+#include "ptk_option.h"
 
-#include <ptk_log.h>
-#include <ptk_option.h>
-#include <ptk_array.h>
-#include <ptk_list.h>
 #include <stdio.h>
 #include <string.h>
 
diff --git a/src/ptk_vk/init.h b/src/ptk_vk/init.h
index 3d16708..47f61c4 100644
--- a/src/ptk_vk/init.h
+++ b/src/ptk_vk/init.h
@@ -3,15 +3,14 @@
 #ifndef PTK_PTK_VK_INIT_H_
 #define PTK_PTK_VK_INIT_H_
 
+#include "ptk.h"
+
 #ifndef GLFW_INCLUDE_VULKAN
 #define GLFW_INCLUDE_VULKAN
 #endif
 #include <GLFW/glfw3.h>
-#include <ptk.h>
-#include <ptk_list.h>
 
-#include <ptk_vk/command_buffers.h>
-#include <ptk_vk/sync_objects.h>
+#include <stdbool.h>
 
 bool vk_init(GLFWwindow *window, const size_t width, const size_t height, const char *title, const PtkVersion version);
 
diff --git a/src/ptk_vk/instance.c b/src/ptk_vk/instance.c
index 281486f..b164191 100644
--- a/src/ptk_vk/instance.c
+++ b/src/ptk_vk/instance.c
@@ -1,10 +1,10 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/instance.h>
+#include "ptk_vk/instance.h"
 
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
-#include <ptk_array.h>
+#include "ptk_array.h"
 
 #ifndef GLFW_INCLUDE_VULKAN
 #define GLFW_INCLUDE_VULKAN
@@ -86,4 +86,3 @@ PTK_OPTION(VkInstance) vk_instance_create(const char *title, const PtkVersion ve
 
     return PTK_OPTION_SOME(VkInstance, ret);
 }
-
diff --git a/src/ptk_vk/instance.h b/src/ptk_vk/instance.h
index e1c627b..6c22dd4 100644
--- a/src/ptk_vk/instance.h
+++ b/src/ptk_vk/instance.h
@@ -3,11 +3,11 @@
 #ifndef PTK_PTK_VK_INSTANCE_H_
 #define PTK_PTK_VK_INSTANCE_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk.h"
+#include "ptk_array.h"
+#include "ptk_option.h"
 
-#include <ptk.h>
-#include <ptk_array.h>
-#include <ptk_option.h>
+#include <vulkan/vulkan_core.h>
 
 PTK_OPTION_DEFINE(VkInstance);
 typedef const char *constcharptr;
diff --git a/src/ptk_vk/physical_device.c b/src/ptk_vk/physical_device.c
index a0fbef4..b32d429 100644
--- a/src/ptk_vk/physical_device.c
+++ b/src/ptk_vk/physical_device.c
@@ -1,8 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/physical_device.h>
+#include "ptk_vk/physical_device.h"
 
-#include <ptk_log.h>
+#include "ptk_log.h"
 
 #include <vulkan/vulkan.h>
 
diff --git a/src/ptk_vk/physical_device.h b/src/ptk_vk/physical_device.h
index 7c3ef8f..f6751ef 100644
--- a/src/ptk_vk/physical_device.h
+++ b/src/ptk_vk/physical_device.h
@@ -3,9 +3,9 @@
 #ifndef PTK_PTK_VK_PHYSICAL_DEVICE_H_
 #define PTK_PTK_VK_PHYSICAL_DEVICE_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk_option.h"
 
-#include <ptk_option.h>
+#include <vulkan/vulkan_core.h>
 
 PTK_OPTION_DEFINE(VkPhysicalDevice);
 
diff --git a/src/ptk_vk/pipeline.c b/src/ptk_vk/pipeline.c
index 6bae682..c5f4581 100644
--- a/src/ptk_vk/pipeline.c
+++ b/src/ptk_vk/pipeline.c
@@ -1,15 +1,15 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/pipeline.h>
+#include "ptk_vk/pipeline.h"
 
-#include <ptk_vk/components.h>
-#include <ptk_vk/swapchain.h>
-#include <ptk_vk/utils.h>
+#include "ptk_vk/components.h"
+#include "ptk_vk/utils.h"
 
-#include <ptk_log.h>
+#include "ptk_array.h"
+#include "ptk_log.h"
 
-#include <errno.h>
-#include <stdio.h>
+#include "errno.h"
+#include "stdio.h"
 
 PTK_OPTION_DEFINE(VkShaderModule);
 PTK_ARRAY_DEFINE(VkVertexInputAttributeDescription);
diff --git a/src/ptk_vk/pipeline.h b/src/ptk_vk/pipeline.h
index 5bd4ea5..c38ace9 100644
--- a/src/ptk_vk/pipeline.h
+++ b/src/ptk_vk/pipeline.h
@@ -3,11 +3,9 @@
 #ifndef PTK_PTK_VK_PIPELINE_H_
 #define PTK_PTK_VK_PIPELINE_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk_option.h"
 
-#include <ptk.h>
-#include <ptk_array.h>
-#include <ptk_option.h>
+#include <vulkan/vulkan_core.h>
 
 typedef struct {
     VkPipeline pipeline;
diff --git a/src/ptk_vk/render_pass.c b/src/ptk_vk/render_pass.c
index 39fc0f2..b6310b4 100644
--- a/src/ptk_vk/render_pass.c
+++ b/src/ptk_vk/render_pass.c
@@ -1,10 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/render_pass.h>
-#include <ptk_vk/swapchain.h>
+#include "ptk_vk/render_pass.h"
 
-#include <ptk_vk/device.h>
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
 PTK_OPTION(VkRenderPass) vk_create_render_pass(VkDevice dev, VkFormat format) {
     VkRenderPass ret;
@@ -62,4 +60,3 @@ PTK_OPTION(VkRenderPass) vk_create_render_pass(VkDevice dev, VkFormat format) {
 
     return PTK_OPTION_SOME(VkRenderPass, ret);
 }
-
diff --git a/src/ptk_vk/render_pass.h b/src/ptk_vk/render_pass.h
index 1ad380e..e2bafe5 100644
--- a/src/ptk_vk/render_pass.h
+++ b/src/ptk_vk/render_pass.h
@@ -3,11 +3,11 @@
 #ifndef PTK_PTK_VK_RENDER_PASS_H_
 #define PTK_PTK_VK_RENDER_PASS_H_
 
-#include <stdbool.h>
+#include "ptk_option.h"
 
 #include <vulkan/vulkan.h>
 
-#include <ptk_option.h>
+#include <stdbool.h>
 
 PTK_OPTION_DEFINE(VkRenderPass);
 
diff --git a/src/ptk_vk/swapchain.c b/src/ptk_vk/swapchain.c
index e150d27..d09715c 100644
--- a/src/ptk_vk/swapchain.c
+++ b/src/ptk_vk/swapchain.c
@@ -1,12 +1,10 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/swapchain.h>
+#include "ptk_vk/swapchain.h"
 
-#include <ptk_vk/physical_device.h>
-#include <ptk_vk/render_pass.h>
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
-#include <ptk_list.h>
+#include "ptk_list.h"
 
 #ifndef GLFW_INCLUDE_VULKAN
 #define GLFW_INCLUDE_VULKAN
diff --git a/src/ptk_vk/swapchain.h b/src/ptk_vk/swapchain.h
index 3f506fa..4ab7197 100644
--- a/src/ptk_vk/swapchain.h
+++ b/src/ptk_vk/swapchain.h
@@ -3,14 +3,13 @@
 #ifndef PTK_PTK_VK_SWAPCHAIN_H_
 #define PTK_PTK_VK_SWAPCHAIN_H_
 
+#include "ptk_vk/device.h"
+
+#include "ptk_list.h"
+
 #include <vulkan/vulkan_core.h>
 #include <GLFW/glfw3.h>
 
-#include <ptk_vk/device.h>
-
-#include <ptk_list.h>
-#include <ptk_option.h>
-
 PTK_LIST_DEFINE(VkFramebuffer);
 
 PTK_LIST_DEFINE(VkSurfaceFormatKHR);
diff --git a/src/ptk_vk/sync_objects.c b/src/ptk_vk/sync_objects.c
index 4552316..9cddaa0 100644
--- a/src/ptk_vk/sync_objects.c
+++ b/src/ptk_vk/sync_objects.c
@@ -1,8 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/sync_objects.h>
+#include "ptk_vk/sync_objects.h"
 
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
 PTK_OPTION(SyncObjects) vk_create_sync_objects(VkDevice dev, uint32_t max_frames_in_flight) {
     SyncObjects ret = {
@@ -42,4 +42,3 @@ PTK_OPTION(SyncObjects) vk_create_sync_objects(VkDevice dev, uint32_t max_frames
     
     return PTK_OPTION_SOME(SyncObjects, ret);
 }
-
diff --git a/src/ptk_vk/sync_objects.h b/src/ptk_vk/sync_objects.h
index 1026c48..d6c1a3d 100644
--- a/src/ptk_vk/sync_objects.h
+++ b/src/ptk_vk/sync_objects.h
@@ -3,10 +3,10 @@
 #ifndef PTK_PTK_VK_SYNC_OBJECTS_H_
 #define PTK_PTK_VK_SYNC_OBJECTS_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk_list.h"
+#include "ptk_option.h"
 
-#include <ptk_list.h>
-#include <ptk_option.h>
+#include <vulkan/vulkan_core.h>
 
 PTK_LIST_DEFINE(VkSemaphore);
 PTK_LIST_DEFINE(VkFence);
diff --git a/src/ptk_vk/uniform_buffers.c b/src/ptk_vk/uniform_buffers.c
index f3731f4..179af81 100644
--- a/src/ptk_vk/uniform_buffers.c
+++ b/src/ptk_vk/uniform_buffers.c
@@ -1,10 +1,10 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/uniform_buffers.h>
+#include "ptk_vk/uniform_buffers.h"
 
-#include <ptk_vk/buffer.h>
+#include "ptk_vk/buffer.h"
 
-#include <ptk_log.h>
+#include "ptk_log.h"
 
 PTK_OPTION(UniformBufferStuff) vk_create_uniform_buffers(VkDevice dev, VkPhysicalDevice physical_dev, uint32_t max_frames_in_flight) {
     const VkDeviceSize buffer_size = sizeof(UniformBufferObject);
@@ -37,4 +37,3 @@ PTK_OPTION(UniformBufferStuff) vk_create_uniform_buffers(VkDevice dev, VkPhysica
 
     return PTK_OPTION_SOME(UniformBufferStuff, ret);
 }
-
diff --git a/src/ptk_vk/uniform_buffers.h b/src/ptk_vk/uniform_buffers.h
index d1d1912..194f005 100644
--- a/src/ptk_vk/uniform_buffers.h
+++ b/src/ptk_vk/uniform_buffers.h
@@ -3,11 +3,11 @@
 #ifndef PTK_PTK_VK_UNIFORM_BUFFERS_H_
 #define PTK_PTK_VK_UNIFORM_BUFFERS_H_
 
-#include <vulkan/vulkan_core.h>
+#include "ptk_list.h"
+#include "ptk_option.h"
+#include "ptk_vec.h"
 
-#include <ptk_list.h>
-#include <ptk_option.h>
-#include <ptk_vec.h>
+#include <vulkan/vulkan_core.h>
 
 PTK_LIST_DEFINE(VkBuffer);
 PTK_LIST_DEFINE(VkDeviceMemory);
diff --git a/src/ptk_vk/utils.c b/src/ptk_vk/utils.c
index 8d1fa99..6c349b5 100644
--- a/src/ptk_vk/utils.c
+++ b/src/ptk_vk/utils.c
@@ -1,6 +1,6 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <ptk_vk/utils.h>
+#include "ptk_vk/utils.h"
 
 const char *vk_result_string(VkResult res) {
     const char *str;
diff --git a/src/ptk_vk/utils.h b/src/ptk_vk/utils.h
index df9e214..2f2b5c5 100644
--- a/src/ptk_vk/utils.h
+++ b/src/ptk_vk/utils.h
@@ -3,8 +3,9 @@
 #ifndef PTK_PTK_VK_UTILS_H_
 #define PTK_PTK_VK_UTILS_H_
 
+#include "ptk_log.h"
+
 #include <vulkan/vulkan_core.h>
-#include <ptk_log.h>
 
 const char *vk_result_string(VkResult res);
 
diff --git a/test/list.c b/test/list.c
index 6d2d355..3ac6092 100644
--- a/test/list.c
+++ b/test/list.c
@@ -1,7 +1,8 @@
 // Copyright (jacekpoz 2024). Licensed under the EUPL-1.2 or later.
 
-#include <test.h>
-#include <ptk_list.h>
+#include "test.h"
+
+#include "ptk_list.h"
 
 PTK_LIST_DEFINE(uint32_t);