diff --git a/config/tlsproxy-mock/Caddyfile b/config/tlsproxy-mock/Caddyfile
index b041c33..a40c65b 100644
--- a/config/tlsproxy-mock/Caddyfile
+++ b/config/tlsproxy-mock/Caddyfile
@@ -1,4 +1,4 @@
-https://{$OP_ADDRESS} {
+https://{$APPLICATION_ADDRESS} {
   reverse_proxy identifier:80
   tls internal
 }