diff --git a/src/Extensions/DetermineReward.cs b/src/Extensions/DetermineReward.cs
index 41e365c..93f2de0 100644
--- a/src/Extensions/DetermineReward.cs
+++ b/src/Extensions/DetermineReward.cs
@@ -23,7 +23,7 @@ public IObservable<bool> Process(IObservable<Tuple<bool?, Trial>> source)
         {
             var response = value.Item1;
             var trial = value.Item2;
-            if (!response.HasValue)
+            if (!response.HasValue || (trial.IsAutoRewardRight.HasValue && trial.IsAutoRewardRight.Value != response.Value))
             {
                 return false;
             }