diff --git a/apps/kustomization.yaml b/apps/kustomization.yaml
index 339d15e..f6e32ef 100644
--- a/apps/kustomization.yaml
+++ b/apps/kustomization.yaml
@@ -1,6 +1,4 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  - code-kustomization.yaml
-  - forge-kustomization.yaml
   - ninja-kustomization.yaml
diff --git a/apps/ninja/invoiceninja-kustomization.yaml b/apps/ninja/invoiceninja-kustomization.yaml
index 9e5d9e1..6089821 100644
--- a/apps/ninja/invoiceninja-kustomization.yaml
+++ b/apps/ninja/invoiceninja-kustomization.yaml
@@ -1,4 +1,3 @@
----
 apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
 kind: Kustomization
 metadata:
diff --git a/apps/ninja/invoiceninja/invoiceninja-kustomization-variables.yaml b/apps/ninja/invoiceninja/invoiceninja-kustomization-variables.yaml
new file mode 100644
index 0000000..fab422e
--- /dev/null
+++ b/apps/ninja/invoiceninja/invoiceninja-kustomization-variables.yaml
@@ -0,0 +1,7 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: stackspout-invoiceninja-kustomization-variables
+  namespace: flux-system
+data:
+  invoiceninja_domain: ninja.${domain}
diff --git a/apps/ninja/invoiceninja/invoiceninja-values-configmap.yaml b/apps/ninja/invoiceninja/invoiceninja-values-configmap.yaml
index 263fdf3..5542ae8 100644
--- a/apps/ninja/invoiceninja/invoiceninja-values-configmap.yaml
+++ b/apps/ninja/invoiceninja/invoiceninja-values-configmap.yaml
@@ -12,7 +12,7 @@ data:
       pullPolicy: Always
     ingress:
       enabled: true
-      hostname: "ninja.${domain}"
+      hostname: "${invoiceninja_domain}"
       tls: true
       certManager: true
       annotations:
@@ -44,7 +44,7 @@ data:
         password: "${redis_password}"
 
     appKey: "${app_key}"
-    appURL: "https://ninja.${domain}"
+    appURL: "https://${invoiceninja_domain}"
     userEmail: "${admin_email}"
     userPassword: "${password}"
     mailer: "smtp" # FIXME use "${outgoing_mail_enabled}"
diff --git a/apps/ninja/ninja-kustomization.yaml b/apps/ninja/ninja-kustomization.yaml
deleted file mode 100644
index 693fcdd..0000000
--- a/apps/ninja/ninja-kustomization.yaml
+++ /dev/null
@@ -1,13 +0,0 @@
----
-apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
-kind: Kustomization
-metadata:
-  name: add-ninja
-  namespace: flux-system
-spec:
-  interval: 10m
-  prune: true
-  path: ./apps/ninja
-  sourceRef:
-    kind: GitRepository
-    name: stackspout