diff --git a/apps/emqx_exhook/src/emqx_exhook_server.erl b/apps/emqx_exhook/src/emqx_exhook_server.erl
index 832915e3f..b15724ff2 100644
--- a/apps/emqx_exhook/src/emqx_exhook_server.erl
+++ b/apps/emqx_exhook/src/emqx_exhook_server.erl
@@ -231,7 +231,7 @@ resolve_hookspec(HookSpecs) when is_list(HookSpecs) ->
                         end,
                     case {lists:member(Name, AvailableHooks), lists:member(Name, MessageHooks)} of
                         {false, _} ->
-                            error({unknown_hookpoint, Name});
+                            error({unknown_hookpoint, Name0});
                         {true, false} ->
                             Acc#{Name => #{}};
                         {true, true} ->