diff --git a/apps/emqx_resource/src/emqx_resource_manager.erl b/apps/emqx_resource/src/emqx_resource_manager.erl
index 5de55fc4f..db4441d88 100644
--- a/apps/emqx_resource/src/emqx_resource_manager.erl
+++ b/apps/emqx_resource/src/emqx_resource_manager.erl
@@ -194,7 +194,7 @@ remove(ResId, ClearMetrics) when is_binary(ResId) ->
 restart(ResId, Opts) when is_binary(ResId) ->
     case safe_call(ResId, restart, ?T_OPERATION) of
         ok ->
-            wait_for_ready(ResId, maps:get(start_timeout, Opts, 5000)),
+            _ = wait_for_ready(ResId, maps:get(start_timeout, Opts, 5000)),
             ok;
         {error, _Reason} = Error ->
             Error
@@ -205,7 +205,7 @@ restart(ResId, Opts) when is_binary(ResId) ->
 start(ResId, Opts) ->
     case safe_call(ResId, start, ?T_OPERATION) of
         ok ->
-            wait_for_ready(ResId, maps:get(start_timeout, Opts, 5000)),
+            _ = wait_for_ready(ResId, maps:get(start_timeout, Opts, 5000)),
             ok;
         {error, _Reason} = Error ->
             Error