diff --git a/build/scss/_cards.scss b/build/scss/_cards.scss
index db21562af..70d315d77 100644
--- a/build/scss/_cards.scss
+++ b/build/scss/_cards.scss
@@ -7,6 +7,10 @@
   @include box-shadow($card-shadow);
 
   &.bg-dark {
+    .card-header {
+      border-color: $card-dark-border-color;
+    }
+
     &,
     .card-body {
       color: $white;
diff --git a/build/scss/_variables.scss b/build/scss/_variables.scss
index cdb2f511a..4ee6a9359 100644
--- a/build/scss/_variables.scss
+++ b/build/scss/_variables.scss
@@ -128,6 +128,7 @@ $control-sidebar-width: $sidebar-width !default;
 // Cards
 // --------------------------------------------------------
 $card-border-color: $gray-100 !default;
+$card-dark-border-color: lighten($gray-900, 10%) !default;
 $card-shadow: 0 0 1px rgba(0, 0, 0, .125), 0 1px 3px rgba(0, 0, 0, .2) !default;
 $card-title-font-size: $font-size-lg;
 $card-title-font-weight: $font-weight-normal;