diff --git a/vendor/k8s.io/kubernetes/staging/src/k8s.io/apiserver/pkg/server/options/encryptionconfig/config.go b/vendor/k8s.io/kubernetes/staging/src/k8s.io/apiserver/pkg/server/options/encryptionconfig/config.go
index bb34dd5846a9..3aad5a00978d 100644
--- a/vendor/k8s.io/kubernetes/staging/src/k8s.io/apiserver/pkg/server/options/encryptionconfig/config.go
+++ b/vendor/k8s.io/kubernetes/staging/src/k8s.io/apiserver/pkg/server/options/encryptionconfig/config.go
@@ -37,7 +37,7 @@ import (
 const (
 	aesCBCTransformerPrefixV1    = "k8s:enc:aescbc:v1:"
 	aesGCMTransformerPrefixV1    = "k8s:enc:aesgcm:v1:"
-	secretboxTransformerPrefixV1 = "k8s:enc:secretbox:v1"
+	secretboxTransformerPrefixV1 = "k8s:enc:secretbox:v1:"
 )
 
 // GetTransformerOverrides returns the transformer overrides by reading and parsing the encryption provider configuration file