diff --git a/Project/Assets/ML-Agents/Examples/Soccer/Scripts/AgentSoccer.cs b/Project/Assets/ML-Agents/Examples/Soccer/Scripts/AgentSoccer.cs
index a2958862dd..a97942af99 100644
--- a/Project/Assets/ML-Agents/Examples/Soccer/Scripts/AgentSoccer.cs
+++ b/Project/Assets/ML-Agents/Examples/Soccer/Scripts/AgentSoccer.cs
@@ -166,6 +166,7 @@ public override void OnActionReceived(float[] vectorAction)
 
     public override void Heuristic(float[] actionsOut)
     {
+        Array.Clear(actionsOut, 0, actionsOut.Length);
         //forward
         if (Input.GetKey(KeyCode.W))
         {
diff --git a/Project/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs b/Project/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs
index 6e670b298f..377d4d7fa2 100644
--- a/Project/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs
+++ b/Project/Assets/ML-Agents/Examples/WallJump/Scripts/WallJumpAgent.cs
@@ -261,6 +261,7 @@ public override void OnActionReceived(float[] vectorAction)
 
     public override void Heuristic(float[] actionsOut)
     {
+        System.Array.Clear(actionsOut, 0, actionsOut.Length);
         if (Input.GetKey(KeyCode.D))
         {
             actionsOut[1] = 2f;
diff --git a/com.unity.ml-agents/Runtime/Agent.cs b/com.unity.ml-agents/Runtime/Agent.cs
index 545de9af0c..5861be14ca 100644
--- a/com.unity.ml-agents/Runtime/Agent.cs
+++ b/com.unity.ml-agents/Runtime/Agent.cs
@@ -766,6 +766,8 @@ public virtual void Initialize() {}
         ///
         /// Your heuristic implementation can use any decision making logic you specify. Assign decision
         /// values to the float[] array, <paramref name="actionsOut"/>, passed to your function as a parameter.
+        /// The same array will be reused between steps. It is up to the user to initialize
+        /// the values on each call, for example by calling `Array.Clear(actionsOut, 0, actionsOut.Length);`.
         /// Add values to the array at the same indexes as they are used in your
         /// <seealso cref="OnActionReceived(float[])"/> function, which receives this array and
         /// implements the corresponding agent behavior. See [Actions] for more information