diff --git a/practical_work/planets/skeleton/planet/planet.h b/practical_work/planets/skeleton/planet/planet.h
index 15ccce731146dd4a83cfa999c4eb6ec60f7bf7c0..789da70978626802215c7ed6a93d85c85c7715bb 100644
--- a/practical_work/planets/skeleton/planet/planet.h
+++ b/practical_work/planets/skeleton/planet/planet.h
@@ -20,7 +20,7 @@ typedef struct _system
 
 // Those function are not mandatory to implement,
 // it's rather a hint of what you should have.
-celestial_body_t create_planet(double mass, vec2 pos);
+celestial_body_t create_celestial_body(double mass, vec2 pos);
 system_t create_system(double delta_t);
 void show_system(struct gfx_context_t *ctxt, system_t *system);
 void update_system(system_t *system, double delta_t);