diff --git a/res/css/views/right_panel/_UserInfo.scss b/res/css/views/right_panel/_UserInfo.scss
index 26b81e94f3..b1511441cb 100644
--- a/res/css/views/right_panel/_UserInfo.scss
+++ b/res/css/views/right_panel/_UserInfo.scss
@@ -53,7 +53,7 @@ limitations under the License.
     }
 
     .mx_UserInfo_separator {
-        border-bottom: 1px solid lightgray;
+        border-bottom: 1px solid rgba($primary-fg-color, .1);
     }
 
     .mx_UserInfo_memberDetailsContainer {