diff --git a/app/assets/stylesheets/common/admin/admin_base.scss b/app/assets/stylesheets/common/admin/admin_base.scss
index ead6a3ede09..f462ec295e6 100644
--- a/app/assets/stylesheets/common/admin/admin_base.scss
+++ b/app/assets/stylesheets/common/admin/admin_base.scss
@@ -402,7 +402,7 @@ $mobile-breakpoint: 700px;
 
   .username {
     input {
-      min-width: 220px;
+      min-width: 15em;
       @media screen and (max-width: 500px) {
         box-sizing: border-box;
         width: 100%;