diff --git a/src/ptk.c b/src/ptk.c
index c7ebacc..fd4bf4e 100644
--- a/src/ptk.c
+++ b/src/ptk.c
@@ -144,6 +144,7 @@ PtkHandle ptk_box(size_t child_count, PtkHandle *children) {
 PtkHandle ptk_triangle(PtkPos vertices[3], PtkColor color) {
     PtkTriangle *ret = malloc(sizeof(PtkTriangle));
     ret->type = PTK_COMPONENT_TYPE_TRIANGLE;
+    ret->children.size = 0;
     memcpy(ret->vertices, vertices, sizeof(PtkPos) * 3);
     ret->color = color;
 
@@ -153,6 +154,7 @@ PtkHandle ptk_triangle(PtkPos vertices[3], PtkColor color) {
 PtkHandle ptk_rect(PtkPos top_left, PtkSize size, PtkColor color) {
     PtkRect *ret = malloc(sizeof(PtkRect));
     ret->type = PTK_COMPONENT_TYPE_RECT;
+    ret->children.size = 0;
     ret->top_left = top_left;
     ret->size = size;
     ret->color = color;
@@ -167,6 +169,7 @@ PtkHandle ptk_square(PtkPos top_left, float size, PtkColor color) {
 PtkHandle ptk_ellipse(PtkPos center, PtkSize radii, PtkColor color) {
     PtkEllipse *ret = malloc(sizeof(PtkEllipse));
     ret->type = PTK_COMPONENT_TYPE_ELLIPSE;
+    ret->children.size = 0;
     ret->center = center;
     ret->radii = radii;
     ret->color = color;
@@ -181,6 +184,7 @@ PtkHandle ptk_circle(PtkPos center, float radius, PtkColor color) {
 PtkHandle ptk_clickable(PtkHandle hitbox, MouseButtonCallback on_press) {
     PtkClickable *ret = malloc(sizeof(PtkClickable));
     ret->type = PTK_COMPONENT_TYPE_CLICKABLE;
+    ret->children.size = 0;
     ret->hitbox = hitbox;
     ret->on_press = on_press;