diff --git a/playground/index.html b/playground/index.html
index 8bd9d56..b46410e 100644
--- a/playground/index.html
+++ b/playground/index.html
@@ -27,7 +27,7 @@
         <textarea class="input langInput" id="jsInput" onkeyup="updateCode('autoRun')" spellcheck="false"></textarea>
       </div>
     </div>
-    <iframe src="" frameborder="0" id="htmlOutput"></iframe>
+    <iframe id="htmlOutput"></iframe>
   </div>
 
   <script src="/playground/emmet.min.js"></script>
diff --git a/vuurjongen-en-watermeisje-4/index.html b/vuurjongen-en-watermeisje-4/index.html
index 35cc7ea..0c37a89 100644
--- a/vuurjongen-en-watermeisje-4/index.html
+++ b/vuurjongen-en-watermeisje-4/index.html
@@ -13,7 +13,7 @@
 </head>
 <body>
 
-  <iframe width="100%" id="game" height="100%" src="https://html5.gamedistribution.com/3790681b69584409b7f681a8e400102d/" frameborder="0" sandbox="allow-forms allow-pointer-lock allow-same-origin allow-scripts allow-top-navigation" allowfullscreen></iframe>
+  <iframe id="game" src="https://html5.gamedistribution.com/3790681b69584409b7f681a8e400102d/" allowfullscreen></iframe>
 
   <script src="/resources/js/navbar.json.js"></script>
   <script src="/resources/js/insertNavbar.js"></script>
