diff --git a/Engine.Physics2D/PhysicsEngine2D.cs b/Engine.Physics2D/PhysicsEngine2D.cs
index ad8b149..5c05f3f 100644
--- a/Engine.Physics2D/PhysicsEngine2D.cs
+++ b/Engine.Physics2D/PhysicsEngine2D.cs
@@ -134,7 +134,7 @@ public class PhysicsEngine2D : HierarchyObject, IPhysicsEngine2D
         while (physicsTicker >= IterationPeriod)
         {
             physicsTicker -= IterationPeriod;
-            Step(physicsTicker);
+            Step(IterationPeriod);
         }
     }