diff --git a/index.js b/index.js
index 08d2f55..de86840 100644
--- a/index.js
+++ b/index.js
@@ -303,7 +303,7 @@ Mod.prototype.callback = function (req, res, serverconsole, responseEnd, href, e
         };
 
         res.prependListener("close", function() {
-          if(handler.stdout) handler.stdout.unpipe(res); //Prevent server crashes with write after the end
+          if(interpreter.stdout) interpreter.stdout.unpipe(res); //Prevent server crashes with write after the end
         });
 
         res.on("error", function() {}); //Suppress response stream errors