diff --git a/cmd/kube-proxy/app/server.go b/cmd/kube-proxy/app/server.go
index 15d33176449..9f038b6fa42 100644
--- a/cmd/kube-proxy/app/server.go
+++ b/cmd/kube-proxy/app/server.go
@@ -98,7 +98,7 @@ func (s *ProxyServerConfig) AddFlags(fs *pflag.FlagSet) {
 const (
 	proxyModeUserspace              = "userspace"
 	proxyModeIptables               = "iptables"
-	experimentalProxyModeAnnotation = "net.extensions.kubernetes.io/proxy-mode"
+	experimentalProxyModeAnnotation = "net.experimental.kubernetes.io/proxy-mode"
 )
 
 func checkKnownProxyMode(proxyMode string) bool {
diff --git a/cmd/kube-proxy/app/server_test.go b/cmd/kube-proxy/app/server_test.go
index d15c46bd0c1..8bb7a22fc55 100644
--- a/cmd/kube-proxy/app/server_test.go
+++ b/cmd/kube-proxy/app/server_test.go
@@ -40,15 +40,15 @@ func Test_mayTryIptablesProxy(t *testing.T) {
 		{"userspace", "", "", false},
 		{"iptables", "", "", true},
 		{"", "", "", false},
-		{"", "net.extensions.kubernetes.io/proxy-mode", "userspace", false},
-		{"", "net.extensions.kubernetes.io/proxy-mode", "iptables", true},
-		{"", "net.extensions.kubernetes.io/proxy-mode", "other", false},
-		{"", "net.extensions.kubernetes.io/proxy-mode", "", false},
+		{"", "net.experimental.kubernetes.io/proxy-mode", "userspace", false},
+		{"", "net.experimental.kubernetes.io/proxy-mode", "iptables", true},
+		{"", "net.experimental.kubernetes.io/proxy-mode", "other", false},
+		{"", "net.experimental.kubernetes.io/proxy-mode", "", false},
 		{"", "proxy-mode", "iptables", false},
-		{"userspace", "net.extensions.kubernetes.io/proxy-mode", "userspace", false},
-		{"userspace", "net.extensions.kubernetes.io/proxy-mode", "iptables", false},
-		{"iptables", "net.extensions.kubernetes.io/proxy-mode", "userspace", true},
-		{"iptables", "net.extensions.kubernetes.io/proxy-mode", "iptables", true},
+		{"userspace", "net.experimental.kubernetes.io/proxy-mode", "userspace", false},
+		{"userspace", "net.experimental.kubernetes.io/proxy-mode", "iptables", false},
+		{"iptables", "net.experimental.kubernetes.io/proxy-mode", "userspace", true},
+		{"iptables", "net.experimental.kubernetes.io/proxy-mode", "iptables", true},
 	}
 	for i, c := range cases {
 		getter := &fakeNodeInterface{}