diff --git a/metadata/service/proxy/stats.yml b/metadata/service/proxy/stats.yml
index af57646..eb00ae0 100644
--- a/metadata/service/proxy/stats.yml
+++ b/metadata/service/proxy/stats.yml
@@ -11,5 +11,5 @@
           type: stats
           check: false
           binds:
-          - address: {_param:haproxy_admin_address}
-            port: {_param:haproxy_admin_port}
\ No newline at end of file
+          - address: ${_param:haproxy_admin_address}
+            port: ${_param:haproxy_admin_port}
\ No newline at end of file