diff --git a/unity-environment/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs b/unity-environment/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs
index 3f4ab2ef4b..60056548cd 100644
--- a/unity-environment/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs
+++ b/unity-environment/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs
@@ -244,7 +244,7 @@ public override void AgentAction(float[] vectorAction, string textAction)
     }
 
     // Detect when the agent hits the goal
-    void OnTriggerEnter(Collider col)
+    void OnTriggerStay(Collider col)
     {
         if (col.gameObject.CompareTag("goal") && DoGroundCheck(0.4f))
         {