diff --git a/scss/_custom-forms.scss b/scss/_custom-forms.scss
index 0d68435324d7..4afc08087633 100644
--- a/scss/_custom-forms.scss
+++ b/scss/_custom-forms.scss
@@ -348,6 +348,7 @@
   z-index: 1;
   height: $custom-file-height;
   padding: $custom-file-padding-y $custom-file-padding-x;
+  overflow: hidden;
   font-family: $custom-file-font-family;
   font-weight: $custom-file-font-weight;
   line-height: $custom-file-line-height;