diff --git a/rel/files/app.config b/rel/files/app.config
index edb95985f..e0f811513 100644
--- a/rel/files/app.config
+++ b/rel/files/app.config
@@ -17,20 +17,22 @@
 	{error_logger_redirect, false},
 	{crash_log, "log/emqttd_crash.log"},
 	{handlers, [
-		{lager_console_backend, debug},
+		{lager_console_backend, info},
 		{lager_file_backend, [
+            {formatter_config, [time, " [",severity,"] ", message, "\n"]},
 			{file, "log/emqttd_info.log"},
 			{level, info},
-			{size, 10485760},
+			{size, 104857600},
 			{date, "$D0"},
-			{count, 5}
+			{count, 10}
 		]},
 		{lager_file_backend, [
+            {formatter_config, [time, " [",severity,"] ", message, "\n"]},
 			{file, "log/emqttd_error.log"},
 			{level, error},
 			{size, 10485760},
 			{date, "$D0"},
-			{count, 5}
+			{count, 10}
 		]}
 	]}
  ]},