diff --git a/python/samba/provision/backend.py b/python/samba/provision/backend.py
index e46e3e86ba1..005c15392e8 100644
--- a/python/samba/provision/backend.py
+++ b/python/samba/provision/backend.py
@@ -403,7 +403,7 @@ class OpenLDAPBackend(LDAPBackend):
             # For now, make these equal
             mmr_pass = self.ldapadminpass
 
-            url_list = filter(None, self.ol_mmr_urls.split(','))
+            url_list = list(filter(None, self.ol_mmr_urls.split(',')))
             for url in url_list:
                 self.logger.info("Using LDAP-URL: " + url)
             if len(url_list) == 1: