diff --git a/gcloud/datastore/query.py b/gcloud/datastore/query.py
index fd11b168602bb..081cb3eb077ef 100644
--- a/gcloud/datastore/query.py
+++ b/gcloud/datastore/query.py
@@ -332,7 +332,10 @@ def fetch(self, limit=None):
          end_cursor,
          more_results,
          skipped_results) = self.dataset().connection().run_query(
-            query_pb=clone.to_protobuf(), dataset_id=self.dataset().id())
+            query_pb=clone.to_protobuf(),
+            dataset_id=self.dataset().id(),
+            namespace=self._namespace,
+            )
 
         self._cursor = end_cursor
         return [Entity.from_protobuf(entity, dataset=self.dataset())
diff --git a/gcloud/datastore/test_query.py b/gcloud/datastore/test_query.py
index d1c014a98f8ba..d7a6d1294b68a 100644
--- a/gcloud/datastore/test_query.py
+++ b/gcloud/datastore/test_query.py
@@ -263,6 +263,7 @@ def test_fetch_default_limit(self):
         self.assertEqual(connection._called_with,
                          {'dataset_id': _DATASET,
                           'query_pb': query.to_protobuf(),
+                          'namespace': None,
                           })
 
     def test_fetch_explicit_limit(self):
@@ -271,6 +272,7 @@ def test_fetch_explicit_limit(self):
         _DATASET = 'DATASET'
         _KIND = 'KIND'
         _ID = 123
+        _NAMESPACE = 'NAMESPACE'
         entity_pb = Entity()
         path_element = entity_pb.key.path_element.add()
         path_element.kind = _KIND
@@ -281,7 +283,7 @@ def test_fetch_explicit_limit(self):
         connection = _Connection(entity_pb)
         connection._cursor = _CURSOR
         dataset = _Dataset(_DATASET, connection)
-        query = self._makeOne(_KIND, dataset)
+        query = self._makeOne(_KIND, dataset, _NAMESPACE)
         limited = query.limit(13)
         entities = query.fetch(13)
         self.assertEqual(query._cursor, _CURSOR)
@@ -291,6 +293,7 @@ def test_fetch_explicit_limit(self):
         self.assertEqual(connection._called_with,
                          {'dataset_id': _DATASET,
                           'query_pb': limited.to_protobuf(),
+                          'namespace': _NAMESPACE,
                           })
 
     def test_cursor_not_fetched(self):