diff --git a/Randomizer.py b/Randomizer.py
index c2288b1..9bddd3c 100644
--- a/Randomizer.py
+++ b/Randomizer.py
@@ -2579,7 +2579,7 @@ def randomize_game(graph):
     patch_game()
 
 def patch_game():
-    global FileName, BaseName
+    global FileName, BaseGame
     CreditsOffsets = {
         'ChargeBeam': 7655617,
         'WideBeam': 7655725,
@@ -2616,7 +2616,7 @@ def patch_game():
         os.system('.\\armips\\armips.exe "Metroid Fusion Open Randomizer.asm" -root ".\\data\\asm" -sym ".\\temp.sym"')
         os.replace('.\\data\\MFOR.gba', '.\\seeds\\{}.gba'.format(FileName))
     else:
-        source = open(BaseName, 'rb')
+        source = open(BaseGame, 'rb')
         target = open(os.path.join('.', 'seeds', '{}.gba'.format(FileName)), 'wb')
         patch = open(os.path.join('.', 'data', 'MFOR.bps'), 'rb')
         try: