diff --git a/adb/adb_debug.py b/adb/adb_debug.py
index 18cb8ad..526df87 100644
--- a/adb/adb_debug.py
+++ b/adb/adb_debug.py
@@ -136,10 +136,9 @@ def main():
         help='Seconds to wait for the dialog to be accepted when using '
              'authenticated ADB.')
     device = common_cli.GetDeviceArguments()
-    parents = [common, device]
-
+    parents = [ common,device]
     parser = argparse.ArgumentParser(
-        description=sys.modules[__name__].__doc__, parents=[common])
+        description=sys.modules[__name__].__doc__, parents=parents)
     subparsers = parser.add_subparsers(title='Commands', dest='command_name')
 
     subparser = subparsers.add_parser(