diff --git a/beastify/popup/choose_beast.js b/beastify/popup/choose_beast.js
index a565d8f..05ffcc7 100644
--- a/beastify/popup/choose_beast.js
+++ b/beastify/popup/choose_beast.js
@@ -19,7 +19,7 @@ document.addEventListener("click", function(e) {
 
   var chosenBeast = e.target.textContent;
   
-  chrome.tabs.executeScript({
+  chrome.tabs.executeScript(null, {
     file: "content_scripts/beastify.js" 
   }, setBeast);