diff --git a/plugins/op_waf/t/test.sh b/plugins/op_waf/t/test.sh
index 97933699c..a8c633360 100755
--- a/plugins/op_waf/t/test.sh
+++ b/plugins/op_waf/t/test.sh
@@ -6,6 +6,8 @@ export PATH
 # yum -y install httpd-tools
 # ab -c 1000 -n 1000000 http://www.zzzvps.com/
 # /cc https://www.zzzvps.com/ 120
+# ab -c 10 -n 1000 http://t1.cn/wp-admin/index.php
+# ab -c 1000 -n 1000000 http://www.zzzvps.com/
 
 python3 index.py
 
diff --git a/plugins/op_waf/waf/lua/init.lua b/plugins/op_waf/waf/lua/init.lua
index ea8bcbdda..97617da45 100644
--- a/plugins/op_waf/waf/lua/init.lua
+++ b/plugins/op_waf/waf/lua/init.lua
@@ -663,7 +663,7 @@ function waf()
     if waf_post() then return true end
     if post_data_chekc() then return true end
     
-    if site_config[server_name]['open'] then
+    if site_config[server_name] and site_config[server_name]['open'] then
         if X_Forwarded() then return true end
         if post_X_Forwarded() then return true end
         -- url_path()