diff --git a/charts/csm-authorization/templates/proxy-server.yaml b/charts/csm-authorization/templates/proxy-server.yaml
index 06a4f2d0..48804714 100644
--- a/charts/csm-authorization/templates/proxy-server.yaml
+++ b/charts/csm-authorization/templates/proxy-server.yaml
@@ -61,7 +61,7 @@ metadata:
 subjects:
   - kind: ServiceAccount
     name: proxy-server
-    namespace: authorization
+    namespace: {{ include "custom.namespace" . }}
 roleRef:
   kind: ClusterRole
   name: proxy-server