diff --git a/Apps/PostgreSQL/docker-compose.yml b/Apps/PostgreSQL/docker-compose.yml
index 0d2b514..946e1ad 100644
--- a/Apps/PostgreSQL/docker-compose.yml
+++ b/Apps/PostgreSQL/docker-compose.yml
@@ -52,7 +52,7 @@ x-casaos:
     - amd64
     - arm
     - arm64
-  main: app
+  main: postgresql
   description:
     en_us: |
       PostgreSQL is a powerful, open source object-relational database system with over 35 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.