diff --git a/cmd/flux/bootstrap.go b/cmd/flux/bootstrap.go
index 78af2305..fd16af94 100644
--- a/cmd/flux/bootstrap.go
+++ b/cmd/flux/bootstrap.go
@@ -88,7 +88,7 @@ func init() {
 		"when enabled, the personal access token will be used instead of SSH deploy key")
 	bootstrapCmd.PersistentFlags().Var(&bootstrapLogLevel, "log-level", bootstrapLogLevel.Description())
 	bootstrapCmd.PersistentFlags().StringVar(&bootstrapManifestsPath, "manifests", "", "path to the manifest directory")
-	bootstrapCmd.PersistentFlags().StringVar(&bootstrapClusterDomain, "cluster-domain", "cluster.local", "internal cluster domain")
+	bootstrapCmd.PersistentFlags().StringVar(&bootstrapClusterDomain, "cluster-domain", defaults.ClusterDomain, "internal cluster domain")
 	bootstrapCmd.PersistentFlags().MarkHidden("manifests")
 	rootCmd.AddCommand(bootstrapCmd)
 }
diff --git a/cmd/flux/install.go b/cmd/flux/install.go
index 5e725963..ad96d883 100644
--- a/cmd/flux/install.go
+++ b/cmd/flux/install.go
@@ -124,6 +124,7 @@ func installCmdRun(cmd *cobra.Command, args []string) error {
 		NotificationController: defaults.NotificationController,
 		ManifestFile:           fmt.Sprintf("%s.yaml", namespace),
 		Timeout:                timeout,
+		ClusterDomain:          installClusterDomain,
 	}
 
 	if installManifestsPath == "" {