diff --git a/less/mixins.less b/less/mixins.less
index 779e121a92..bdd787166f 100644
--- a/less/mixins.less
+++ b/less/mixins.less
@@ -257,8 +257,8 @@
   }
   .vertical(@startColor: #555, @endColor: #333, @startPercent: 0%, @endPercent: 100%) {
     background-color: @endColor;
-	background-image: -webkit-gradient(linear, 0 @startPercent, 0 @endPercent, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
-	background-image: -webkit-linear-gradient(top, @startColor, @startPercent, @endColor, @endPercent); // Safari 5.1+, Chrome 10+
+    background-image: -webkit-gradient(linear, 0 @startPercent, 0 @endPercent, from(@startColor), to(@endColor)); // Safari 4+, Chrome 2+
+    background-image: -webkit-linear-gradient(top, @startColor, @startPercent, @endColor, @endPercent); // Safari 5.1+, Chrome 10+
     background-image: -moz-linear-gradient(top, @startColor @startPercent, @endColor @endPercent); // FF 3.6+
     background-image: linear-gradient(to bottom, @startColor @startPercent, @endColor @endPercent); // Standard, IE10
     background-repeat: repeat-x;