diff --git a/dbSer/postgres/prod.stack.yml b/dbSer/postgres/prod.stack.yml
index 2d7963b..123571b 100644
--- a/dbSer/postgres/prod.stack.yml
+++ b/dbSer/postgres/prod.stack.yml
@@ -10,7 +10,7 @@ services:
     environment:
       - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
       - POSTGRES_HOST_AUTH_METHOD=${POSTGRES_HOST_AUTH_METHOD}
-      - POSTGRES_INITDB_ARGS=--auth-host==${POSTGRES_HOST_AUTH_METHOD}
+      - POSTGRES_INITDB_ARGS=--auth-host=${POSTGRES_HOST_AUTH_METHOD}
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
       - TZ=Asia/Shanghai