diff --git a/internal/log/log.go b/internal/log/log.go
index 48fea383de..ac8e5a831f 100644
--- a/internal/log/log.go
+++ b/internal/log/log.go
@@ -140,6 +140,7 @@ func S() *zap.SugaredLogger {
 	return _globalS.Load().(*zap.SugaredLogger)
 }
 
+// R returns utils.ReconfigurableRateLimiter.
 func R() *utils.ReconfigurableRateLimiter {
 	return _globalR.Load().(*utils.ReconfigurableRateLimiter)
 }