diff --git a/gtk/theme/HighContrast/_common.scss b/gtk/theme/HighContrast/_common.scss
index c9b35bb7da..3a77bc682f 100644
--- a/gtk/theme/HighContrast/_common.scss
+++ b/gtk/theme/HighContrast/_common.scss
@@ -2197,7 +2197,7 @@ GtkFileChooserDialog {
 $_placesidebar_icons_opacity: 0.9;
 GtkSidebarRow {
   // Needs overriding of the GtkListBoxRow padding
-  @at-root .list-row {
+  &.list-row {
     padding: 0px;
   }
   // Using margins/padding directly in the SidebarRow
diff --git a/gtk/theme/HighContrast/gtk.css b/gtk/theme/HighContrast/gtk.css
index 9a2aa2c919..23202cb4be 100644
--- a/gtk/theme/HighContrast/gtk.css
+++ b/gtk/theme/HighContrast/gtk.css
@@ -2395,7 +2395,7 @@ GtkFileChooserDialog .dialog-action-box {
       border-right: none;
       border-left: 1px solid #7f7f7f; }
 
-.list-row {
+GtkSidebarRow.list-row {
   padding: 0px; }
 GtkSidebarRow .sidebar-revealer {
   padding: 4px 14px 4px 12px; }