diff --git a/scripts/geodata/osm/formatter.py b/scripts/geodata/osm/formatter.py
index 403e1f98..9334452b 100644
--- a/scripts/geodata/osm/formatter.py
+++ b/scripts/geodata/osm/formatter.py
@@ -474,7 +474,7 @@ class OSMAddressFormatter(object):
                 place_tags.append((address_components, language, False))
 
             if postal_codes:
-                for address_components in place_tags:
+                for address_components, language, is_default in place_tags:
                     address_components[AddressFormatter.POSTCODE] = random.choice(postal_codes)
 
         return place_tags, country