diff --git a/docker/docker.go b/docker/docker.go
index 4f0130ab..d07f2c3d 100644
--- a/docker/docker.go
+++ b/docker/docker.go
@@ -705,7 +705,7 @@ func GetKubeletDockerConfig(prsMap map[string]v3.PrivateRegistry) (string, error
 	auths := map[string]authConfig{}
 
 	for url, pr := range prsMap {
-		auth := base64.URLEncoding.EncodeToString([]byte(fmt.Sprintf("%s:%s", pr.User, pr.Password)))
+		auth := base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%s:%s", pr.User, pr.Password)))
 		auths[url] = authConfig{Auth: auth}
 	}
 	cfg, err := json.Marshal(dockerConfig{auths})