diff --git a/apps/emqx_bridge_http/src/emqx_bridge_http_action_info.erl b/apps/emqx_bridge_http/src/emqx_bridge_http_action_info.erl
index 3b0543ace..6d676beb8 100644
--- a/apps/emqx_bridge_http/src/emqx_bridge_http_action_info.erl
+++ b/apps/emqx_bridge_http/src/emqx_bridge_http_action_info.erl
@@ -58,7 +58,7 @@ connector_action_config_to_bridge_v1_config(ConnectorConfig, ActionConfig) ->
     Url1 =
         case Path of
             <<>> -> Url;
-            _ -> emqx_bridge_http_connector:join_paths(Url, Path)
+            _ -> iolist_to_binary(emqx_bridge_http_connector:join_paths(Url, Path))
         end,
 
     BridgeV1Config4#{