diff --git a/src/navigation/tabnav.scss b/src/navigation/tabnav.scss
index 828443c5..6a2a9bf9 100644
--- a/src/navigation/tabnav.scss
+++ b/src/navigation/tabnav.scss
@@ -3,7 +3,7 @@
 .tabnav {
   margin-top: 0;
   margin-bottom: $spacer-3;
-  border-bottom: $border-width $border-style $border-gray;
+  border-bottom: $border;
 }
 
 .tabnav-tabs {