diff --git a/clientv3/doc.go b/clientv3/doc.go
index dacc5bb34..ffa7495bf 100644
--- a/clientv3/doc.go
+++ b/clientv3/doc.go
@@ -54,6 +54,12 @@
 //			// ctx is canceled by another routine
 //		} else if err == context.DeadlineExceeded {
 //			// ctx is attached with a deadline and it exceeded
+//		} else if ev, ok := status.FromError(err); ok {
+//			code := ev.Code()
+//			if code == codes.DeadlineExceeded {
+//				// server-side context might have timed-out first (due to clock skew)
+//				// while original client-side context is not timed-out yet
+//			}
 //		} else if verr, ok := err.(*v3rpc.ErrEmptyKey); ok {
 //			// process (verr.Errors)
 //		} else {