diff --git a/gtk/theme/HighContrast/_common.scss b/gtk/theme/HighContrast/_common.scss
index 6fb9458d08..63fe601489 100644
--- a/gtk/theme/HighContrast/_common.scss
+++ b/gtk/theme/HighContrast/_common.scss
@@ -1441,6 +1441,7 @@ treeview.view.progressbar { //Progressbar in treeview cells
 menubar,
 .menubar {
   padding: 0px;
+  box-shadow: inset 0 -1px $borders_color;
   & > menuitem {
     padding: 4px 8px;
     &:hover { //Seems like it :hover even with keyboard focus
diff --git a/gtk/theme/HighContrast/gtk-contained-inverse.css b/gtk/theme/HighContrast/gtk-contained-inverse.css
index 9b7c9736f6..65db2ef76c 100644
--- a/gtk/theme/HighContrast/gtk-contained-inverse.css
+++ b/gtk/theme/HighContrast/gtk-contained-inverse.css
@@ -1564,7 +1564,8 @@ treeview.view.progressbar {
  *********/
 menubar,
 .menubar {
-  padding: 0px; }
+  padding: 0px;
+  box-shadow: inset 0 -1px gray; }
   menubar > menuitem,
   .menubar > menuitem {
     padding: 4px 8px; }
diff --git a/gtk/theme/HighContrast/gtk-contained.css b/gtk/theme/HighContrast/gtk-contained.css
index 95e54c1d7b..b349f778ab 100644
--- a/gtk/theme/HighContrast/gtk-contained.css
+++ b/gtk/theme/HighContrast/gtk-contained.css
@@ -1568,7 +1568,8 @@ treeview.view.progressbar {
  *********/
 menubar,
 .menubar {
-  padding: 0px; }
+  padding: 0px;
+  box-shadow: inset 0 -1px gray; }
   menubar > menuitem,
   .menubar > menuitem {
     padding: 4px 8px; }