diff --git a/hub/city_model_structure/city.py b/hub/city_model_structure/city.py
index f3bf38f7..03764570 100644
--- a/hub/city_model_structure/city.py
+++ b/hub/city_model_structure/city.py
@@ -275,8 +275,7 @@ class City:
     :param city_filename: destination city filename
     :return: None
     """
-
-    with bz2.BZ2File('bz2_test.pbz2', 'wb') as f:
+    with bz2.BZ2File(city_filename, 'wb') as f:
       pickle.dump(self, f)
 
   def region(self, center, radius) -> City: