diff --git a/spec.yaml b/spec.yaml
index bc4d682..7cb777b 100644
--- a/spec.yaml
+++ b/spec.yaml
@@ -29,7 +29,7 @@ services:
     envs:
       - key: APP_APPLICATION__BASE_URL
         scope: RUN_TIME
-        value: ${_self.APP_URL}
+        value: ${APP_URL}
       - key: APP_DATABASE__USERNAME
         scope: RUN_TIME
         value: ${newsletter.USERNAME}