diff --git a/config/ks-core/templates/kubesphere-config.yaml b/config/ks-core/templates/kubesphere-config.yaml
index 56d4b99fe..447f4cc12 100644
--- a/config/ks-core/templates/kubesphere-config.yaml
+++ b/config/ks-core/templates/kubesphere-config.yaml
@@ -1,3 +1,8 @@
+{{- if ne .Release.Namespace "kubesphere-system" }}
+{{- fail "This Helm release must be installed in the 'kubesphere-system' namespace." }}
+{{- end }}
+
+---
 apiVersion: v1
 kind: ConfigMap
 metadata: