diff --git a/cmd/kubeadm/app/util/config/joinconfiguration.go b/cmd/kubeadm/app/util/config/joinconfiguration.go
index 531e45ebe9c..89922ef3146 100644
--- a/cmd/kubeadm/app/util/config/joinconfiguration.go
+++ b/cmd/kubeadm/app/util/config/joinconfiguration.go
@@ -135,7 +135,9 @@ func DefaultedJoinConfiguration(defaultversionedcfg *kubeadmapiv1beta2.JoinConfi
 	// Takes passed flags into account; the defaulting is executed once again enforcing assignment of
 	// static default values to cfg only for values not provided with flags
 	kubeadmscheme.Scheme.Default(defaultversionedcfg)
-	kubeadmscheme.Scheme.Convert(defaultversionedcfg, internalcfg, nil)
+	if err := kubeadmscheme.Scheme.Convert(defaultversionedcfg, internalcfg, nil); err != nil {
+		return nil, err
+	}
 
 	// Applies dynamic defaults to settings not provided with flags
 	if err := SetJoinDynamicDefaults(internalcfg); err != nil {