diff --git a/kolla/image/build.py b/kolla/image/build.py
index fde63e6a01..eb9637c693 100755
--- a/kolla/image/build.py
+++ b/kolla/image/build.py
@@ -497,7 +497,8 @@ class KollaWorker(object):
         self.install_type = conf.install_type
         self.tag = conf.tag
         self.images = list()
-        rpm_setup_config = filter(None, conf.rpm_setup_config)
+        rpm_setup_config = ([repo_file for repo_file in
+                             conf.rpm_setup_config if repo_file is not None])
         self.rpm_setup = self.build_rpm_setup(rpm_setup_config)
 
         rh_base = ['centos', 'oraclelinux', 'rhel']
diff --git a/kolla/tests/test_build.py b/kolla/tests/test_build.py
index fccf7f41b7..95b5fd2f15 100644
--- a/kolla/tests/test_build.py
+++ b/kolla/tests/test_build.py
@@ -230,6 +230,11 @@ class KollaWorkerTest(base.TestCase):
 
         self.assertEqual(2, len(self._get_matched_images(kolla.images)))
 
+    def test_build_rpm_setup(self):
+        """checking the length of list of docker commands"""
+        kolla = build.KollaWorker(self.conf)
+        self.assertEqual(2, len(kolla.rpm_setup))
+
     def test_pre_defined_exist_profile(self):
         # default profile include the fake image: image-base
         self.conf.set_override('profile', ['default'])