diff --git a/rel/files/emqttd.config.development b/rel/files/emqttd.config.development
index 7b79c45fd..cd1dd471f 100644
--- a/rel/files/emqttd.config.development
+++ b/rel/files/emqttd.config.development
@@ -17,7 +17,8 @@
 	{crash_log, "log/emqttd_crash.log"},
 	{handlers, [
 		{lager_console_backend, info},
-		%%{lager_emqtt_backend, info},
+        %%NOTICE: Level >= error
+		%%{lager_emqtt_backend, error},
 		{lager_file_backend, [
             {formatter_config, [time, " ", pid, " [",severity,"] ", message, "\n"]},
 			{file, "log/emqttd_info.log"},
diff --git a/rel/files/emqttd.config.production b/rel/files/emqttd.config.production
index 8baf0e5ba..66b57865b 100644
--- a/rel/files/emqttd.config.production
+++ b/rel/files/emqttd.config.production
@@ -17,6 +17,7 @@
 	{crash_log, "log/emqttd_crash.log"},
 	{handlers, [
 		%%{lager_console_backend, info},
+        %%NOTICE: Level >= error
 		%%{lager_emqtt_backend, error},
 		{lager_file_backend, [
             {formatter_config, [time, " ", pid, " [",severity,"] ", message, "\n"]},
diff --git a/src/lager_emqtt_backend.erl b/src/lager_emqtt_backend.erl
index 1b35cdeb9..7bf35844c 100644
--- a/src/lager_emqtt_backend.erl
+++ b/src/lager_emqtt_backend.erl
@@ -92,5 +92,5 @@ publish_log(Message, State = #state{formatter = Formatter,
     {ok, State}.
 
 topic(Severity) ->
-    emqttd_topic:systop(list_to_binary(lists:concat(['log/', Severity]))).
+    emqttd_topic:systop(list_to_binary(lists:concat(['logs/', Severity]))).