diff --git a/cmd/kubeadm/app/cmd/upgrade/upgrade.go b/cmd/kubeadm/app/cmd/upgrade/upgrade.go
index 1d2ccabd6c1..e4740f5c37a 100644
--- a/cmd/kubeadm/app/cmd/upgrade/upgrade.go
+++ b/cmd/kubeadm/app/cmd/upgrade/upgrade.go
@@ -77,7 +77,6 @@ func addApplyPlanFlags(fs *pflag.FlagSet, flags *applyPlanFlags) {
 	fs.BoolVar(&flags.allowExperimentalUpgrades, "allow-experimental-upgrades", flags.allowExperimentalUpgrades, "Show unstable versions of Kubernetes as an upgrade alternative and allow upgrading to an alpha/beta/release candidate versions of Kubernetes.")
 	fs.BoolVar(&flags.allowRCUpgrades, "allow-release-candidate-upgrades", flags.allowRCUpgrades, "Show release candidate versions of Kubernetes as an upgrade alternative and allow upgrading to a release candidate versions of Kubernetes.")
 	fs.BoolVar(&flags.printConfig, "print-config", flags.printConfig, "Specifies whether the configuration file that will be used in the upgrade should be printed or not.")
-	fs.MarkDeprecated("skip-preflight-checks", "it is now equivalent to --ignore-preflight-errors=all")
 	fs.StringVar(&flags.featureGatesString, "feature-gates", flags.featureGatesString, "A set of key=value pairs that describe feature gates for various features. "+
 		"Options are:\n"+strings.Join(features.KnownFeatures(&features.InitFeatureGates), "\n"))
 	options.AddIgnorePreflightErrorsFlag(fs, &flags.ignorePreflightErrors)