diff --git a/keystoneclient/hacking/checks.py b/keystoneclient/hacking/checks.py
index 49458f7..4282698 100644
--- a/keystoneclient/hacking/checks.py
+++ b/keystoneclient/hacking/checks.py
@@ -24,9 +24,7 @@ import re
 
 def check_oslo_namespace_imports(logical_line, blank_before, filename):
     oslo_namespace_imports = re.compile(
-        r"(((from)|(import))\s+oslo\."
-        "((config)|(serialization)|(utils)|(i18n)))|"
-        "(from\s+oslo\s+import\s+((config)|(serialization)|(utils)|(i18n)))")
+        r"(((from)|(import))\s+oslo\.)|(from\s+oslo\s+import\s+)")
 
     if re.match(oslo_namespace_imports, logical_line):
         msg = ("K333: '%s' must be used instead of '%s'.") % (