diff --git a/cfg_checker/helpers/args_utils.py b/cfg_checker/helpers/args_utils.py
index 68f22d5..84bd6f1 100644
--- a/cfg_checker/helpers/args_utils.py
+++ b/cfg_checker/helpers/args_utils.py
@@ -26,11 +26,13 @@
     return _skip, _skip_file
 
 
-def get_arg(args, str_arg):
+def get_arg(args, str_arg, nofail=False):
     _attr = getattr(args, str_arg)
     if _attr:
         return _attr
     else:
+        if nofail:
+            return None
         _c = args.command if hasattr(args, 'command') else ''
         _t = args.type if hasattr(args, 'type') else ''
         raise ConfigException(