diff --git a/src/ac/acl/spec/check_spec.py b/src/ac/acl/spec/check_spec.py
index 8a45f4ccf0ac28e0079335f9a1a5b33a0b545dca..6b012f603fdead932e40ab0e4c9175aae1b2da50 100644
--- a/src/ac/acl/spec/check_spec.py
+++ b/src/ac/acl/spec/check_spec.py
@@ -117,10 +117,13 @@ class CheckSpec(BaseCheck):
             if self._gp.is_revert_commit(depth=5):  # revert, version back, ignore
                 logger.debug("revert commit")
                 return SUCCESS
+            else:
+                logger.debug("Downgrade version, need clarification.")
+                return WARNING
 
-        logger.error("current version: %s-r%s, last version: %s-r%s",
+        logger.debug("Forget to update version info? current version: %s-r%s, last version: %s-r%s",
                      self._spec.version, self._spec.release, spec_o.version, spec_o.release)
-        return FAILED
+        return WARNING
 
     def check_homepage(self, timeout=30, retrying=3, interval=1):
         """