diff --git a/Terminal.Gui/Core/Toplevel.cs b/Terminal.Gui/Core/Toplevel.cs
index a9951da7b..9d38592cf 100644
--- a/Terminal.Gui/Core/Toplevel.cs
+++ b/Terminal.Gui/Core/Toplevel.cs
@@ -158,6 +158,7 @@ namespace Terminal.Gui {
 
 			switch (keyEvent.Key) {
 			case Key.AltMask:
+			case Key.AltMask | Key.Space:
 			case Key.CtrlMask | Key.Space:
 				if (MenuBar != null && MenuBar.OnKeyDown (keyEvent)) {
 					return true;
@@ -177,6 +178,7 @@ namespace Terminal.Gui {
 
 			switch (keyEvent.Key) {
 			case Key.AltMask:
+			case Key.AltMask | Key.Space:
 			case Key.CtrlMask | Key.Space:
 				if (MenuBar != null && MenuBar.OnKeyUp (keyEvent)) {
 					return true;