diff --git a/src/collision.c b/src/collision.c
index 2e568a5..78f9ce8 100644
--- a/src/collision.c
+++ b/src/collision.c
@@ -133,9 +133,9 @@ int collision_check(PhysicsEntity a, PhysicsEntity b, Collision* out_a, Collisio
         return 0;
 
     if(vsqrmagnitudef(collision_a.penetration_vector) <= vsqrmagnitudef(collision_b.penetration_vector))
-        collision_b = _internal_collision_invert(collision_a, a);
+        collision_b = collision_invert(collision_a, a);
     else
-        collision_a = _internal_collision_invert(collision_b, b);
+        collision_a = collision_invert(collision_b, b);
 
     *out_a = collision_a;
     *out_b = collision_b;