diff --git a/src/BizHawk.Client.EmuHawk/tools/MultiDiskBundler/MultiDiskBundler.Designer.cs b/src/BizHawk.Client.EmuHawk/tools/MultiDiskBundler/MultiDiskBundler.Designer.cs
index 2248b4d4b4..85602f6fc4 100644
--- a/src/BizHawk.Client.EmuHawk/tools/MultiDiskBundler/MultiDiskBundler.Designer.cs
+++ b/src/BizHawk.Client.EmuHawk/tools/MultiDiskBundler/MultiDiskBundler.Designer.cs
@@ -142,6 +142,7 @@
             "GB",
 			"GB3x",
 			"GB4x",
+			"GEN",
 			"PCFX",
             "PSX",
             "SAT",