diff --git a/sass/elements/form.sass b/sass/elements/form.sass
index 83f177ed..9820c89f 100644
--- a/sass/elements/form.sass
+++ b/sass/elements/form.sass
@@ -611,6 +611,7 @@ $help-size: $size-small !default
       position: absolute !important
       right: 0.625em
       top: 0.625em
+      z-index: 4
     &.is-small:after
       font-size: $size-small
     &.is-medium:after