diff --git a/scss/_variables.scss b/scss/_variables.scss
index 2cc6caf066..8a6e7c3f92 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -212,6 +212,7 @@ $line-height-lg:         1.5 !default;
 $line-height-sm:         1.5 !default;
 
 $border-width: 1px !default;
+$border-color: $gray-200 !default;
 
 $border-radius:          .25rem !default;
 $border-radius-lg:       .3rem !default;