diff --git a/address.py b/address.py
index a142932..14e4532 100644
--- a/address.py
+++ b/address.py
@@ -24,7 +24,7 @@ class Address(metaclass=PoolMeta):
             zips = Zip.search([
                         ('zip', '=', self.zip),
                         ('subdivision.country', '=', self.country.id),
-                        ])
+                        ], limit=1)
             if zips:
                 zip_, = zips
                 self.city = zip_.city