diff --git a/apisix/plugins/kafka-logger.lua b/apisix/plugins/kafka-logger.lua
index e3d50ff7..d007dbf6 100644
--- a/apisix/plugins/kafka-logger.lua
+++ b/apisix/plugins/kafka-logger.lua
@@ -23,7 +23,7 @@ local type     = type
 local table    = table
 local ipairs   = ipairs
 local plugin_name = "kafka-logger"
-local stale_timer_running = false;
+local stale_timer_running = false
 local timer_at = ngx.timer.at
 local tostring = tostring
 local ngx = ngx
@@ -182,4 +182,5 @@ function _M.log(conf, ctx)
     log_buffer:push(entry)
 end
 
+
 return _M