diff --git a/templates/nginx.default.conf.j2 b/templates/nginx.default.conf.j2
index 2f6cbf9..8261d5c 100644
--- a/templates/nginx.default.conf.j2
+++ b/templates/nginx.default.conf.j2
@@ -60,7 +60,7 @@ server {
     proxy_http_version 1.1;
     proxy_set_header  Authorization $pep_credentials;
     proxy_set_header  Content-Type "application/x-www-form-urlencoded";
-    proxy_pass        "{{ iam_host }}/auth/realms/d4science/protocol/openid-connect/token/introspect";
+    proxy_pass        "{{ keycloak_auth_server }}/auth/realms/d4science/protocol/openid-connect/token/introspect";
 
     proxy_ignore_headers  Cache-Control Expires Set-Cookie;
     gunzip on;