diff --git a/scss/_variables.scss b/scss/_variables.scss
index 28fd58edd7..ddafa0c2c6 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -920,7 +920,7 @@ $modal-content-box-shadow-sm-up:    0 .5rem 1rem rgba($black, .5) !default;
 
 $modal-backdrop-bg:                 $black !default;
 $modal-backdrop-opacity:            .5 !default;
-$modal-header-border-color:         $gray-200 !default;
+$modal-header-border-color:         $border-color !default;
 $modal-footer-border-color:         $modal-header-border-color !default;
 $modal-header-border-width:         $modal-content-border-width !default;
 $modal-footer-border-width:         $modal-header-border-width !default;