diff -u a/obm-xdg b/obm-xdg
--- a/obm-xdg	2008-01-28 21:41:40.000000000 -0200
+++ b/obm-xdg	2008-01-28 21:40:22.000000000 -0200
@@ -437,8 +437,8 @@
 		elif arg == "-r":
 			role = "replace"
 		else:
-			if os.path.isfile(sys.argv[1]):
-				filename = sys.argv[1]
+			if os.path.isfile(arg):
+				filename = arg
 	
 	mnu.parseFile(filename)