diff --git a/src/ptk.c b/src/ptk.c
index 2a1872e..d5a58b2 100644
--- a/src/ptk.c
+++ b/src/ptk.c
@@ -22,18 +22,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-// TODO: clean up globals here
-
-static void key_callback(GLFWwindow *window, int key, int scancode, int action, int mods) {
-    (void)window; (void)scancode; (void)action; (void)mods;
-    if (key == GLFW_KEY_SPACE) {
-        PTK_LIST_FOR_EACH_P(Vertex, g_vertices, vertex, {
-            vertex->pos.x += 1.0f;
-        });
-        vk_transfer_vertex_data();
-    }
-}
-
 static void mouse_button_callback(GLFWwindow *window, int button, int action, int mods) {
     double x, y;
     glfwGetCursorPos(window, &x, &y);
@@ -115,7 +103,6 @@ bool ptk_init(const size_t width, const size_t height, const char *title, const
     }
 
     glfwSetFramebufferSizeCallback(window, vk_framebuffer_resized);
-    glfwSetKeyCallback(window, key_callback);
     glfwSetMouseButtonCallback(window, mouse_button_callback);
 
     vk_init_vertices();