diff --git a/apps/emqx_modules/src/emqx_topic_metrics_api.erl b/apps/emqx_modules/src/emqx_topic_metrics_api.erl
index b216fe44b..74a37b652 100644
--- a/apps/emqx_modules/src/emqx_topic_metrics_api.erl
+++ b/apps/emqx_modules/src/emqx_topic_metrics_api.erl
@@ -238,10 +238,8 @@ fields(metrics) ->
             NKey = binary_to_atom(list_to_binary(Str), utf8),
             ?DESC(NKey)
         end,
-    [{Key, mk(integer(), #{desc => ToDesc(Key), example => 0})} || Key <- Integers]
-    ++
-    [{Key, mk(number(), #{desc => ToDesc(Key), example => 0})} || Key <- Numbers].
-
+    [{Key, mk(integer(), #{desc => ToDesc(Key), example => 0})} || Key <- Integers] ++
+        [{Key, mk(number(), #{desc => ToDesc(Key), example => 0})} || Key <- Numbers].
 
 topic(In) ->
     Desc =
diff --git a/lib-ee/emqx_license/include/emqx_license.hrl b/lib-ee/emqx_license/include/emqx_license.hrl
index 5cc7c6df0..f67c63577 100644
--- a/lib-ee/emqx_license/include/emqx_license.hrl
+++ b/lib-ee/emqx_license/include/emqx_license.hrl
@@ -11,7 +11,7 @@
     "\n"
     "========================================================================\n"
     "Using an evaluation license limited to ~p concurrent connections.\n"
-    "Apply a license at https://emqx.com/apply-licenses/emqx.\n"
+    "Apply for a license at https://emqx.com/apply-licenses/emqx.\n"
     "Or contact EMQ customer services.\n"
     "========================================================================\n"
 ).
@@ -20,7 +20,7 @@
     "\n"
     "========================================================================\n"
     "License has been expired for ~p days.\n"
-    "Apply a new license at https://emqx.com/apply-licenses/emqx.\n"
+    "Apply for a new license at https://emqx.com/apply-licenses/emqx.\n"
     "Or contact EMQ customer services.\n"
     "========================================================================\n"
 ).
diff --git a/lib-ee/emqx_license/src/emqx_license_checker.erl b/lib-ee/emqx_license/src/emqx_license_checker.erl
index 161e5a9cf..473ca0965 100644
--- a/lib-ee/emqx_license/src/emqx_license_checker.erl
+++ b/lib-ee/emqx_license/src/emqx_license_checker.erl
@@ -11,7 +11,16 @@
 
 -define(CHECK_INTERVAL, 5000).
 -define(EXPIRY_ALARM_CHECK_INTERVAL, 24 * 60 * 60).
--define(OK(EXPR), try _ = begin EXPR end, ok catch _:_ -> ok end).
+-define(OK(EXPR),
+    try
+        _ = begin
+            EXPR
+        end,
+        ok
+    catch
+        _:_ -> ok
+    end
+).
 
 -export([
     start_link/1,