diff --git a/index.html b/index.html
index 1c0833d26b..4d35a995ac 100644
--- a/index.html
+++ b/index.html
@@ -124,7 +124,9 @@ THE SOFTWARE.
var $vmToggle = $('#vm');
var $web3Toggle = $('#web3');
+
var executionContext = 'vm';
+ $vmToggle.get(0).checked = true;
$vmToggle.on('change', executionContextChange );
$web3Toggle.on('change', executionContextChange );