diff --git a/pyrouge/Rouge155.py b/pyrouge/Rouge155.py
index ae5ae78..34d6ba3 100644
--- a/pyrouge/Rouge155.py
+++ b/pyrouge/Rouge155.py
@@ -579,7 +579,7 @@ def __clean_rouge_args(self, rouge_args):
             return rouge_args
 
     def __add_config_option(self, options):
-        return options + ['-m'] + [self._config_file]
+        return options + [self._config_file]
 
     def __get_config_path(self):
         if platform.system() == "Windows":