diff --git a/run.py b/run.py
index bd9e99c..2d47919 100644
--- a/run.py
+++ b/run.py
@@ -247,8 +247,8 @@ def main(argv):
         print('No XML file in command line')
         sys.exit()
 
-    if len(argv) == 1 and os.path.isdir(argv):
-        files = glob.glob(argv + '/**/*.xml', recursive=True)
+    if len(argv) == 1 and os.path.isdir(argv[0]):
+        files = glob.glob(argv[0] + '/**/*.xml', recursive=True)
     else:
         files = argv