diff --git a/docs/er/openapi/enterprise-router.yaml b/docs/er/openapi/enterprise-router.yaml
index f900f612b..664491791 100644
--- a/docs/er/openapi/enterprise-router.yaml
+++ b/docs/er/openapi/enterprise-router.yaml
@@ -3,7 +3,7 @@ info:
   title: ER
   description: |-
     An enterprise router is a central router that interconnects all of your VPCs and on-premises networks. It uses Border Gateway Protocol (BGP) to learn routes and dynamically select or switch between connections.
-    This improves network scalability, O&M efficiency, and service continuity.
+    This improves network scalability, O&M efficiency, and service continuitya.
   version: v3
 servers:
   - url: https://enterprise.huawei.com/