diff --git a/docs/index.html b/docs/index.html
index 23341e8..73418ef 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -65,7 +65,7 @@ <h1>jsQR Demo</h1>
   <script>
     var video = document.createElement("video");
     var canvasElement = document.getElementById("canvas");
-    var canvas = canvasElement.getContext("2d");
+    var canvas = canvasElement.getContext("2d",{ willReadFrequently: true });
     var loadingMessage = document.getElementById("loadingMessage");
     var outputContainer = document.getElementById("output");
     var outputMessage = document.getElementById("outputMessage");