diff --git a/staging/src/k8s.io/apiserver/pkg/endpoints/metrics/metrics.go b/staging/src/k8s.io/apiserver/pkg/endpoints/metrics/metrics.go
index a47ca7ff217..36b4df510cc 100644
--- a/staging/src/k8s.io/apiserver/pkg/endpoints/metrics/metrics.go
+++ b/staging/src/k8s.io/apiserver/pkg/endpoints/metrics/metrics.go
@@ -170,6 +170,7 @@ var (
 		DroppedRequests,
 		DeprecatedDroppedRequests,
 		RegisteredWatchers,
+		WatchEvents,
 		currentInflightRequests,
 	}
 )