diff --git a/lib/platform/gitlab/index.ts b/lib/platform/gitlab/index.ts
index 8d59b1fb1ec1aeafb51f742c589718467e9d12b2..c379638c5eafba3ad1f84c4d36fced23e81a15c8 100644
--- a/lib/platform/gitlab/index.ts
+++ b/lib/platform/gitlab/index.ts
@@ -790,7 +790,8 @@ export async function addAssignees(
       logger.error({ iid, assignees }, 'Failed to add multiple assignees');
     }
   } catch (err) {
-    logger.error({ iid, assignees }, 'Failed to add assignees');
+    logger.debug({ err }, 'addAssignees error');
+    logger.warn({ iid, assignees }, 'Failed to add assignees');
   }
 }