diff --git a/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs b/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs
index 87ce097594..1fdff995bc 100644
--- a/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs
+++ b/src/BizHawk.Client.Common/movie/bk2/Bk2Movie.cs
@@ -24,15 +24,6 @@ namespace BizHawk.Client.Common
 
 		public virtual void Attach(IEmulator emulator)
 		{
-			// TODO: this check would ideally happen
-			// but is disabled for now because restarting a movie doesn't new one up
-			// so the old one hangs around with old emulator until this point
-			// maybe we should new it up, or have a detach method
-			//if (!Emulator.IsNull())
-			//{
-			//	throw new InvalidOperationException("A core has already been attached!");
-			//}
-
 			Emulator = emulator;
 		}
 
diff --git a/src/BizHawk.Client.Common/movie/tasproj/TasStateManager.cs b/src/BizHawk.Client.Common/movie/tasproj/TasStateManager.cs
index 591193afc9..6aa441231f 100644
--- a/src/BizHawk.Client.Common/movie/tasproj/TasStateManager.cs
+++ b/src/BizHawk.Client.Common/movie/tasproj/TasStateManager.cs
@@ -46,11 +46,6 @@ namespace BizHawk.Client.Common
 
 		public void Attach(IEmulator emulator)
 		{
-			if (!_emulator.IsNull())
-			{
-				throw new InvalidOperationException("A core has already been attached!");
-			}
-
 			if (!emulator.HasSavestates())
 			{
 				throw new InvalidOperationException($"A core must be able to provide an {nameof(IStatable)} service");