diff --git a/apps/iot/src/endpoint/iot_zd_endpoint.erl b/apps/iot/src/endpoint/iot_zd_endpoint.erl
index ccc1270..3be3bda 100644
--- a/apps/iot/src/endpoint/iot_zd_endpoint.erl
+++ b/apps/iot/src/endpoint/iot_zd_endpoint.erl
@@ -252,6 +252,6 @@ format_data(LocationCode, DynamicLocationCode, Fields, Timestamp) when is_binary
         Body = iolist_to_binary(jiffy:encode(Data, [force_utf8])),
         {ok, Body}
     catch _:Reason ->
-        lager:warning("[iot_zd_endpoint] location_code: ~p, format_data get error: ~p", LocationCode, Reason),
+        lager:warning("[iot_zd_endpoint] location_code: ~p, format_data get error: ~p", [LocationCode, Reason]),
         error
     end.
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