diff --git a/docker/utils/utils.py b/docker/utils/utils.py
index 8dc726b3..71511a4f 100644
--- a/docker/utils/utils.py
+++ b/docker/utils/utils.py
@@ -715,7 +715,7 @@ def create_container_config(
         'Hostname': hostname,
         'Domainname': domainname,
         'ExposedPorts': ports,
-        'User': user,
+        'User': '{0}'.format(user) if user else None,
         'Tty': tty,
         'OpenStdin': stdin_open,
         'StdinOnce': stdin_once,
diff --git a/tests/integration_test.py b/tests/integration_test.py
index fd4ff2d0..db4d131b 100644
--- a/tests/integration_test.py
+++ b/tests/integration_test.py
@@ -1624,3 +1624,6 @@ class TestRegressions(BaseTestCase):
         ctnr = self.client.create_container('busybox', ['sleep', '2'])
         self.client.start(ctnr)
         self.client.stop(ctnr)
+
+    def test_715(self):
+        self.client.create_container('busybox', 'true', user=1000)