diff --git a/nav2_behavior_tree/include/nav2_behavior_tree/bt_action_server_impl.hpp b/nav2_behavior_tree/include/nav2_behavior_tree/bt_action_server_impl.hpp
index 35872ea4f4a..5f37d794628 100644
--- a/nav2_behavior_tree/include/nav2_behavior_tree/bt_action_server_impl.hpp
+++ b/nav2_behavior_tree/include/nav2_behavior_tree/bt_action_server_impl.hpp
@@ -379,7 +379,7 @@ void BtActionServer<ActionT>::cleanErrorCodes()
     name = error_code_name_prefix + "_error_code";
     blackboard_->set<unsigned short>(name, 0);  //NOLINT
     name = error_code_name_prefix + "_error_msg";
-    blackboard_->set<std::string>(name, 0);  //NOLINT
+    blackboard_->set<std::string>(name, "");
   }
 }