diff --git a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PortalUserInfoController.java b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PortalUserInfoController.java
index 47d8ddf6e65efb66046fb7a58dcb6eea3cd3ba56..639e3341c114f34928f54897b265e87cdbefe5a6 100644
--- a/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PortalUserInfoController.java
+++ b/apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/controller/PortalUserInfoController.java
@@ -65,7 +65,7 @@ public class PortalUserInfoController {
 
     //重定向到SSO的logout地址
     String casServerUrl = serverConfigRepository.findByKey("casServerUrlPrefix").getValue();
-    String serverName = serverConfigRepository.findByKey("casServerUrlPrefix").getValue();
+    String serverName = serverConfigRepository.findByKey("serverName").getValue();
 
     response.sendRedirect(casServerUrl + "/logout?service=" + serverName);
   }