diff --git a/src/BizHawk.Client.Common/movie/tasproj/TasMovie.IO.cs b/src/BizHawk.Client.Common/movie/tasproj/TasMovie.IO.cs
index 8891d5d9aa..1bf4775083 100644
--- a/src/BizHawk.Client.Common/movie/tasproj/TasMovie.IO.cs
+++ b/src/BizHawk.Client.Common/movie/tasproj/TasMovie.IO.cs
@@ -167,6 +167,7 @@ namespace BizHawk.Client.Common
 
 			bl.GetLump(BinaryStateLump.StateHistory, false, delegate(BinaryReader br, long length)
 			{
+				TasStateManager?.Dispose();
 				TasStateManager = ZwinderStateManager.Create(br, TasStateManager.Settings, IsReserved);
 			});
 		}