diff --git a/BizHawk.MultiClient/MainForm.cs b/BizHawk.MultiClient/MainForm.cs
index 67854c7e1c..c3f2d23596 100644
--- a/BizHawk.MultiClient/MainForm.cs
+++ b/BizHawk.MultiClient/MainForm.cs
@@ -1473,6 +1473,7 @@ namespace BizHawk.MultiClient
 								}
 								break;
 							case "GB":
+							case "GBC":
 								if (!Global.Config.GB_AsSGB)
 								{
 									if (Global.Config.GB_ForceDMG) game.AddOption("ForceDMG");