diff --git a/src/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs b/src/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs
index f92ce87f32..8a0120279c 100644
--- a/src/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs
+++ b/src/BizHawk.Client.Common/movie/tasproj/TasMovie.Editing.cs
@@ -51,7 +51,7 @@ namespace BizHawk.Client.Common
 
 			LagLog.RemoveFrom(frame);
 			TasStateManager.InvalidateAfter(frame);
-			GreenzoneInvalidated(frame);
+			GreenzoneInvalidated?.Invoke(frame);
 			Markers.TruncateAt(frame);
 
 			ChangeLog.SetGeneralRedo();
diff --git a/src/BizHawk.Client.Common/movie/tasproj/TasMovie.cs b/src/BizHawk.Client.Common/movie/tasproj/TasMovie.cs
index 1108c180f3..f938885927 100644
--- a/src/BizHawk.Client.Common/movie/tasproj/TasMovie.cs
+++ b/src/BizHawk.Client.Common/movie/tasproj/TasMovie.cs
@@ -122,7 +122,7 @@ namespace BizHawk.Client.Common
 		{
 			var anyLagInvalidated = LagLog.RemoveFrom(frame);
 			var anyStateInvalidated = TasStateManager.InvalidateAfter(frame);
-			GreenzoneInvalidated(frame);
+			GreenzoneInvalidated?.Invoke(frame);
 			if (anyLagInvalidated || anyStateInvalidated)
 			{
 				Changes = true;
@@ -286,7 +286,7 @@ namespace BizHawk.Client.Common
 			{
 				LagLog.RemoveFrom(timelineBranchFrame.Value);
 				TasStateManager.InvalidateAfter(timelineBranchFrame.Value);
-				GreenzoneInvalidated(timelineBranchFrame.Value);
+				GreenzoneInvalidated?.Invoke(timelineBranchFrame.Value);
 			}
 
 			return true;