diff --git a/plugins/mongodb/mongo_lag b/plugins/mongodb/mongo_lag
index 67292ac6..681798ff 100755
--- a/plugins/mongodb/mongo_lag
+++ b/plugins/mongodb/mongo_lag
@@ -29,7 +29,7 @@ def _get_members():
     port = os.environ.get('port', 27017)
     username = os.environ.get('username', '')
     password = os.environ.get('password', '')
-    conn = pymongo.MongoClient(host,int(port))
+    conn = pymongo.MongoClient(host, int(port))
     if username:
         connAuth = conn['admin']
         connAuth.authenticate(username, password)