diff --git a/lib/fluent/plugin/in_tail.rb b/lib/fluent/plugin/in_tail.rb
index f793ae2b85..852f2723bd 100644
--- a/lib/fluent/plugin/in_tail.rb
+++ b/lib/fluent/plugin/in_tail.rb
@@ -1224,7 +1224,7 @@ def handle_notify
 
                     if group_watcher_limit || limit_bytes_per_second_reached? || should_shutdown_now?
                       # Just get out from tailing loop.
-                      @metrics.throttled.inc
+                      @metrics.throttled.inc if group_watcher_limit || limit_bytes_per_second_reached?
                       read_more = false
                       break
                     end