diff --git a/tweet_havester/general_process.py b/tweet_havester/general_process.py
index b8f95b04e024bc3876f6a6552d8bb9591e328926..fdeac5d2db2e951c212cfd8f23abd33cd88ae624 100644
--- a/tweet_havester/general_process.py
+++ b/tweet_havester/general_process.py
@@ -21,6 +21,8 @@ def data_process(tweet,model):
         if city in location.lower():
             #generalize city name
             location=city
+        else:
+            return None
     
     p_tweet={
     '_id':id,