diff --git a/pkg/utils/etcdutil/etcdutil.go b/pkg/utils/etcdutil/etcdutil.go
index 885afc5ed8aa..32f32bd60874 100644
--- a/pkg/utils/etcdutil/etcdutil.go
+++ b/pkg/utils/etcdutil/etcdutil.go
@@ -449,7 +449,7 @@ func (lw *LoopWatcher) StartWatchLoop() {
 				zap.Error(err))
 			watchStartRevision = nextRevision
 			time.Sleep(lw.watchChangeRetryInterval)
-			failpoint.Inject("updateClient", func(val failpoint.Value) {
+			failpoint.Inject("updateClient", func() {
 				lw.client = <-lw.updateClientCh
 			})
 		}