diff --git a/12/index.html b/12/index.html
index bf61337..e4e85e9 100644
--- a/12/index.html
+++ b/12/index.html
@@ -286,7 +286,7 @@
                 }
             });
 
-            document.querySelector("audio_05 #TOC_icon").addEventListener("click",function(){
+            document.querySelector(".audio_05 #TOC_icon").addEventListener("click",function(){
               document.querySelector("#implicancies_05 #week_05").classList.toggle("hidden");
             });