diff --git a/BizHawk.Client.Common/tools/WatchList.cs b/BizHawk.Client.Common/tools/WatchList.cs
index 168a7112f1..691aecc2fb 100644
--- a/BizHawk.Client.Common/tools/WatchList.cs
+++ b/BizHawk.Client.Common/tools/WatchList.cs
@@ -518,6 +518,8 @@ namespace BizHawk.Client.Common
 							bigEndian));
 					_domain = Global.Emulator.MemoryDomains[domain];
 				}
+
+				Domain = Global.Emulator.MemoryDomains[domain] ?? Global.Emulator.MemoryDomains.MainMemory;
 			}
 
 			if (!append)