diff --git a/Toby Doom Launcher.py b/Toby Doom Launcher.py
index 10d81d6..3cab1c3 100755
--- a/Toby Doom Launcher.py	
+++ b/Toby Doom Launcher.py	
@@ -2299,11 +2299,13 @@ class DoomLauncher(QMainWindow):
         menuPath = self.gamePath / "Addons" / "MENU"
         if menuPath.exists():
             # Add menu files in order
+            # Sound directory files use capitalized names (DOOM, Heretic, Hexen)
+            sound_dir_name = game_type if game_type == "DOOM" else game_type.capitalize()
             menu_addons = [
                 "TobyV9_SimpleMenu.pk3",
-                f"TobySoundDirectory_{game_type}.pk3"
+                f"TobySoundDirectory_{sound_dir_name}.pk3"
             ]
-            
+
             for addon in menu_addons:
                 addon_path = menuPath / addon
                 if addon_path.exists():