diff --git a/leenkx/Sources/leenkx/trait/physics/bullet/PhysicsWorld.hx b/leenkx/Sources/leenkx/trait/physics/bullet/PhysicsWorld.hx
index 4d205a4..f72b5ee 100644
--- a/leenkx/Sources/leenkx/trait/physics/bullet/PhysicsWorld.hx
+++ b/leenkx/Sources/leenkx/trait/physics/bullet/PhysicsWorld.hx
@@ -420,7 +420,8 @@ class PhysicsWorld extends Trait {
 		var rb: RigidBody = null;
 		var hitInfo: Hit = null;
 
-		if (rayCallback.hasHit()) {
+		var rc: bullet.Bt.RayResultCallback = rayCallback;
+		if (rc.hasHit()) {
 			#if js
 			var co = rayCallback.get_m_collisionObject();
 			var body = untyped bullet.Bt.Ammo.btRigidBody.prototype.upcast(co);
@@ -480,7 +481,8 @@ class PhysicsWorld extends Trait {
 
 		var hitInfo: ConvexHit = null;
 
-		if (convexCallback.hasHit()) {
+		var cc: bullet.Bt.ClosestConvexResultCallback = convexCallback;
+		if (cc.hasHit()) {
 			#if js
 			var hit = convexCallback.get_m_hitPointWorld();
 			convexHitPointWorld.set(hit.x(), hit.y(), hit.z());