diff --git a/less/_inputs.less b/less/_inputs.less
index 5daeafac..2c7889f5 100644
--- a/less/_inputs.less
+++ b/less/_inputs.less
@@ -32,7 +32,7 @@ select[multiple].form-control {
   background-position: center bottom, center calc(~"100% - 1px");
   background-color: transparent;
   background-color: rgba(0,0,0,0);
-  transition: background 0 ease-out;
+  transition: background 0s ease-out;
   &::-webkit-input-placeholder {
     color: @input-placeholder-color;
   }