diff --git a/lib/bridge.js b/lib/bridge.js
index d6349d1..48c7e3d 100644
--- a/lib/bridge.js
+++ b/lib/bridge.js
@@ -28,7 +28,7 @@ function runPHP(req, response, next, phpinfo){
 
   var env = {
     SERVER_SIGNATURE: "php-webkit",
-    PW_BIN_$$PATH: path.dirname(process.execPath),
+    PW_BIN_PATH: path.dirname(process.execPath),
     PW_BIN_FILE: process.execPath,
     PW_ARGUMENTS: phpinfo.arguments,
     PW_MANIFEST: phpinfo.manifest,
@@ -159,4 +159,4 @@ exports.cgi = function(phpinfo){
       runPHP(req, res, next, phpinfo);
     });
   };
-};
\ No newline at end of file
+};