diff --git a/src/pkg/controller/configmap/controller.go b/src/pkg/controller/configmap/controller.go
index 9f1a0a0..065af24 100644
--- a/src/pkg/controller/configmap/controller.go
+++ b/src/pkg/controller/configmap/controller.go
@@ -38,7 +38,6 @@ Database:
       SSL:
         Mode: verify-full
     Admin:
-      ExistingDatabase: zitadel
       SSL:
         Mode: verify-full
 ExternalDomain: %s
@@ -60,7 +59,7 @@ SystemAPIUsers:
 	opts := builder.ConfigMapOpts{
 		Zitadel:   zitadel,
 		Key:       key,
-		Immutable: false,
+		Immutable: true,
 		Data:      config,
 	}
 	configmap, err := r.Builder.BuildConfigMap(opts, zitadel)