diff --git a/dbm-ui/backend/ticket/builders/mysql/mysql_fixpoint_rollback.py b/dbm-ui/backend/ticket/builders/mysql/mysql_fixpoint_rollback.py
index 6c8065f27c..e214c3a052 100644
--- a/dbm-ui/backend/ticket/builders/mysql/mysql_fixpoint_rollback.py
+++ b/dbm-ui/backend/ticket/builders/mysql/mysql_fixpoint_rollback.py
@@ -127,7 +127,7 @@ def post_callback(self):
         for info in next_flow.details["ticket_data"]["infos"]:
             info["rollback_ip"] = info["rollback_host"][0]["ip"]
             info["bk_rollback"] = info.pop("rollback_host")[0]
-            info["resource_spec"]["single"] = info["resource_spec"].pop["rollback_host"]
+            info["resource_spec"]["single"] = info["resource_spec"].pop("rollback_host")
         next_flow.save(update_fields=["details"])