diff --git a/template/stacks/ref-implementation/openbao/values.yaml b/template/stacks/ref-implementation/openbao/values.yaml
index 16154c8..34f275b 100644
--- a/template/stacks/ref-implementation/openbao/values.yaml
+++ b/template/stacks/ref-implementation/openbao/values.yaml
@@ -43,7 +43,6 @@ server:
         - name: sidecar-script
           mountPath: /etc/nginx 
           subPath: nginx.conf
-          subPathExpr: 'nginx.conf'
         - name: sidecar-script
           mountPath: /tmp/sidecar.sh
           subPath: sidecar.sh