diff --git a/src/display.c b/src/display.c
index 849991d..6bb4f02 100644
--- a/src/display.c
+++ b/src/display.c
@@ -133,7 +133,7 @@ inline void display_update(void)
 #endif // DEBUG >= 1
 }
 
-int display_draw_texture(texture_t *texture, rect_t *src_rect, frect_t *dst_frect, bool flip)
+int display_draw_texture(texture_t *texture, const rect_t *src_rect, const frect_t *dst_frect, bool flip)
 {
     frect_t src_frect;
     rect_to_frect(src_rect, &src_frect);
@@ -147,7 +147,7 @@ int display_draw_texture(texture_t *texture, rect_t *src_rect, frect_t *dst_frec
     return EXIT_SUCCESS;
 }
 
-int display_draw_frect(frect_t *frect, unsigned int r, unsigned int g, unsigned int b, unsigned int a)
+int display_draw_frect(const frect_t *frect, unsigned int r, unsigned int g, unsigned int b, unsigned int a)
 {
     if(!SDL_SetRenderDrawColor(renderer, r, g, b, a))
     {
diff --git a/src/headers/display.h b/src/headers/display.h
index fd10ed5..37c80f8 100644
--- a/src/headers/display.h
+++ b/src/headers/display.h
@@ -27,7 +27,7 @@ void display_exit(void);
 int display_clear(void);
 void display_update(void);
 
-int display_draw_texture(texture_t *texture, rect_t *src_rect, frect_t *dst_frect, bool flip);
-int display_draw_frect(frect_t *frect, unsigned int r, unsigned int g, unsigned int b, unsigned int a);
+int display_draw_texture(texture_t *texture, const rect_t *src_rect, const frect_t *dst_frect, bool flip);
+int display_draw_frect(const frect_t *frect, unsigned int r, unsigned int g, unsigned int b, unsigned int a);
 
 #endif // DISPLAY_H
\ No newline at end of file
diff --git a/src/headers/ecs.h b/src/headers/ecs.h
index 41fb1f8..95bfcd8 100644
--- a/src/headers/ecs.h
+++ b/src/headers/ecs.h
@@ -18,7 +18,7 @@ typedef int (*component_init_t)(component_t *component);
 // Component update function. It is called in the main loop to update the component. This function is necessary.
 typedef int (*component_update_t)(component_t *component);
 // Component draw function. It is called in the main loop to draw the component on screen. This function is not necessary.
-typedef int (*component_draw_t)(component_t *component);
+typedef int (*component_draw_t)(const component_t *component);
 // Component deleter function. It is called when the component is removed. It should free the data in the component data but not the component itself.
 typedef int (*component_deleter_t)(component_t *component);