diff --git a/res/css/views/rooms/_RoomList.scss b/res/css/views/rooms/_RoomList.scss
index 2335bd5e18..9a6c47ad31 100644
--- a/res/css/views/rooms/_RoomList.scss
+++ b/res/css/views/rooms/_RoomList.scss
@@ -28,7 +28,7 @@ limitations under the License.
 .mx_RoomList_explorePrompt {
     margin: 4px 12px 4px;
     padding-top: 12px;
-    border-top: 1px solid #8D99A5;
+    border-top: 1px solid $tertiary-fg-color;
     font-size: $font-13px;
 
     div:first-child {