diff --git a/lib/reporters/html.js b/lib/reporters/html.js
index 81f7c464ff..5167d18bfc 100644
--- a/lib/reporters/html.js
+++ b/lib/reporters/html.js
@@ -80,7 +80,8 @@ function HTML(runner) {
   }
 
   // pass toggle
-  on(passesLink, 'click', function() {
+  on(passesLink, 'click', function(evt) {
+    evt.preventDefault();
     unhide();
     var name = (/pass/).test(report.className) ? '' : ' pass';
     report.className = report.className.replace(/fail|pass/g, '') + name;
@@ -90,7 +91,8 @@ function HTML(runner) {
   });
 
   // failure toggle
-  on(failuresLink, 'click', function() {
+  on(failuresLink, 'click', function(evt) {
+    evt.preventDefault();
     unhide();
     var name = (/fail/).test(report.className) ? '' : ' fail';
     report.className = report.className.replace(/fail|pass/g, '') + name;