diff --git a/src/scss/cdb-components/forms/_radio.scss b/src/scss/cdb-components/forms/_radio.scss
index 42cd12b..ca261d3 100644
--- a/src/scss/cdb-components/forms/_radio.scss
+++ b/src/scss/cdb-components/forms/_radio.scss
@@ -56,7 +56,7 @@
 }
 
 .CDB-Radio:checked + .CDB-Radio-face {
-  @include transition(background, 300ms);
+  transition: background 300ms;
   border: 1px solid $cBlue;
   background: $cBlue;