diff --git a/wagtail/wagtailadmin/static/wagtailadmin/scss/layouts/login.scss b/wagtail/wagtailadmin/static/wagtailadmin/scss/layouts/login.scss
index a8164272d..4abf3ae20 100644
--- a/wagtail/wagtailadmin/static/wagtailadmin/scss/layouts/login.scss
+++ b/wagtail/wagtailadmin/static/wagtailadmin/scss/layouts/login.scss
@@ -179,6 +179,7 @@ form{
         left: $desktop-nice-padding;
         margin-top: -1em;
         top: 50%;
+        font-size:1.5em;
     }
 
     .full{