diff --git a/common/static/sass/_mixins-inherited.scss b/common/static/sass/_mixins-inherited.scss
index fa6a8bfcd2..7a3cb1633d 100644
--- a/common/static/sass/_mixins-inherited.scss
+++ b/common/static/sass/_mixins-inherited.scss
@@ -281,7 +281,7 @@
   }
 }
 
-@mixin gray-button {
+.gray-button {
   @include button;
   @include linear-gradient(top, $white-t1, rgba(255, 255, 255, 0));
   box-shadow: 0 1px 0 $white-t1 inset;