diff --git a/auth/store.go b/auth/store.go
index 26fa9f65e..9239af7b8 100644
--- a/auth/store.go
+++ b/auth/store.go
@@ -934,8 +934,13 @@ func (as *authStore) isOpPermitted(userName string, revision uint64, key, rangeE
 	if revision == 0 {
 		return ErrUserEmpty
 	}
-
-	if revision < as.Revision() {
+	rev := as.Revision()
+	if revision < rev {
+		as.lg.Warn("request auth revision is less than current node auth revision",
+			zap.Uint64("current node auth revision", rev),
+			zap.Uint64("request auth revision", revision),
+			zap.ByteString("request key", key),
+			zap.Error(ErrAuthOldRevision))
 		return ErrAuthOldRevision
 	}