diff --git a/res/css/views/rooms/_AuxPanel.scss b/res/css/views/rooms/_AuxPanel.scss
index 34ef5e01d4..17a6294bf0 100644
--- a/res/css/views/rooms/_AuxPanel.scss
+++ b/res/css/views/rooms/_AuxPanel.scss
@@ -17,7 +17,7 @@ limitations under the License.
 .m_RoomView_auxPanel_stateViews {
     padding: 5px;
     padding-left: 19px;
-    border-bottom: 1px solid #e5e5e5;
+    border-bottom: 1px solid $primary-hairline-color;
 }
 
 .m_RoomView_auxPanel_stateViews_span a {