diff --git a/app/assets/stylesheets/common/select-kit/select-kit.scss b/app/assets/stylesheets/common/select-kit/select-kit.scss
index 777d5665336..cea7f6f8717 100644
--- a/app/assets/stylesheets/common/select-kit/select-kit.scss
+++ b/app/assets/stylesheets/common/select-kit/select-kit.scss
@@ -31,6 +31,7 @@
 
     .select-kit-collection {
       border-radius: inherit;
+      box-sizing: border-box;
       width: 100%;
     }
   }