diff --git a/app.py b/app.py
index aaa163b..36f823e 100644
--- a/app.py
+++ b/app.py
@@ -172,7 +172,7 @@ def post_request(url, data):
         "Content-Type": "application/json"
     }
     response = requests.post(url, data=data,headers=headers)
-    use += " post:"+str((time.time()*1000) - bgn + "ms")
+    use += " post:"+str((time.time()*1000) - bgn ) +"ms"
     print("post_request",use,response.text)
 
 # import pstats