diff --git a/lib/fluent/plugin/out_forward.rb b/lib/fluent/plugin/out_forward.rb
index 058f8a02da..8b6ad4c130 100644
--- a/lib/fluent/plugin/out_forward.rb
+++ b/lib/fluent/plugin/out_forward.rb
@@ -638,7 +638,7 @@ def fetch_or(key = Thread.current.object_id)
               @active_socks[key] = TimedSocket.new(timeout, yield, 0)
             end
 
-            @active_socks[key].ref += 1;
+            @active_socks[key].ref += 1
             @active_socks[key].sock
           end
         end