diff --git a/shadowsocks-csharp/Data/abp.js b/shadowsocks-csharp/Data/abp.js
index cea08514..1f8c1408 100644
--- a/shadowsocks-csharp/Data/abp.js
+++ b/shadowsocks-csharp/Data/abp.js
@@ -6,8 +6,21 @@
 // 2019-02-08: Updated to support shadowsocks-windows user rules.
 
 var proxy = __PROXY__;
-var userrules = __USERRULES__;
-var rules = __RULES__;
+var userrules = [];
+var rules = [];
+
+// convert to abp grammar
+for (var i = 0; i < __RULES__.length; i++) {
+    var s = __RULES__.pop();
+    if (s.substring(0, 2) == "||") s += "^";
+    rules.push(s);
+}
+
+for (var i = 0; i < __USERRULES__.length; i++) {
+    var s = __USERRULES__.pop();
+    if (s.substring(0, 2) == "||") s += "^";
+    userrules.push(s);
+}
 
 /*
 * This file is part of Adblock Plus <http://adblockplus.org/>,