diff --git a/scss/_modal.scss b/scss/_modal.scss
index 66f981151a..15e3754b7b 100644
--- a/scss/_modal.scss
+++ b/scss/_modal.scss
@@ -86,6 +86,7 @@
   justify-content: space-between; // Put modal header elements (title and dismiss) on opposite ends
   padding: $modal-header-padding;
   border-bottom: $modal-header-border-width solid $modal-header-border-color;
+  @include border-top-radius($border-radius-lg);
 
   .close {
     padding: $modal-header-padding;