diff --git a/src/document/openapi/cn/components_order.yml b/src/document/openapi/cn/components_order.yml
index a3c2e38cf..8ed2798a6 100644
--- a/src/document/openapi/cn/components_order.yml
+++ b/src/document/openapi/cn/components_order.yml
@@ -26,7 +26,7 @@ orderBasic:
     expire:
       type: string
       default: 5m
-      pattern: ^\d(m|h)$
+      pattern: ^\d([mh])$
       description: |
         超时时间，默认5m，如果商户端有全局配置则取商户配置
         可以提供以下格式的精确时间：yyyy-MM-dd HH:mm:ss，基于GMT+10时区。
diff --git a/src/document/openapi/en/components_order.yml b/src/document/openapi/en/components_order.yml
index f0a8b6c3b..27546cb07 100644
--- a/src/document/openapi/en/components_order.yml
+++ b/src/document/openapi/en/components_order.yml
@@ -25,7 +25,7 @@ orderBasic:
       description: mark of operator
     expire:
       type: string
-      pattern: ^\d+(m|h)$
+      pattern: ^\d+([mh])$
       default: 5m
       description: |
         can provide an accurate time with format yyyy-MM-dd HH:mm:ss in GMT+10 timezone.