diff --git a/rest/handler/timeouthandler.go b/rest/handler/timeouthandler.go
index 98a8883c5..be9978fc2 100644
--- a/rest/handler/timeouthandler.go
+++ b/rest/handler/timeouthandler.go
@@ -106,7 +106,7 @@ func (h *timeoutHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	case <-ctx.Done():
 		tw.mu.Lock()
 		defer tw.mu.Unlock()
-		// there isn't any user-defined middleware before TimoutHandler,
+		// there isn't any user-defined middleware before TimeoutHandler,
 		// so we can guarantee that cancelation in biz related code won't come here.
 		httpx.ErrorCtx(r.Context(), w, ctx.Err(), func(w http.ResponseWriter, err error) {
 			if errors.Is(err, context.Canceled) {