diff --git a/docs/samples/basic.html b/docs/samples/basic.html
index dafc87f8..dc0089f7 100644
--- a/docs/samples/basic.html
+++ b/docs/samples/basic.html
@@ -3,6 +3,8 @@
 
 <script src="../../build/libv86.js"></script>
 <script>
+"use strict";
+
 window.onload = function()
 {
     var emulator = new V86Starter({