diff --git a/rate/rate.go b/rate/rate.go
index feab629..938feaf 100644
--- a/rate/rate.go
+++ b/rate/rate.go
@@ -199,9 +199,10 @@
 // The Limiter takes this Reservation into account when allowing future events.
 // ReserveN returns false if n exceeds the Limiter's burst size.
 // Usage example:
-//   r, ok := lim.ReserveN(time.Now(), 1)
-//   if !ok {
+//   r := lim.ReserveN(time.Now(), 1)
+//   if !r.OK() {
 //     // Not allowed to act! Did you remember to set lim.burst to be > 0 ?
+//     return
 //   }
 //   time.Sleep(r.Delay())
 //   Act()