diff --git a/source/core/menu/menu.h b/source/core/menu/menu.h
index e19d84d5e..272d02a9c 100644
--- a/source/core/menu/menu.h
+++ b/source/core/menu/menu.h
@@ -766,7 +766,7 @@ void I_ReleaseMouseCapture();
 struct MenuClassDescriptor;
 extern TArray<MenuClassDescriptor*> menuClasses;
 
-using hFunc = std::function<void(bool)>;
+using hFunc = std::function<bool(bool)>;
 DMenu* CreateMessageBoxMenu(DMenu* parent, const char* message, int messagemode, int scriptID, bool playsound, FName action = NAME_None, hFunc handler = nullptr);
 
 
diff --git a/source/core/menu/messagebox.cpp b/source/core/menu/messagebox.cpp
index ee3fccf01..4ea2e6d70 100644
--- a/source/core/menu/messagebox.cpp
+++ b/source/core/menu/messagebox.cpp
@@ -77,7 +77,7 @@ class DMessageBoxMenu : public DMenu
 	int messageSelection;
 	int mMouseLeft, mMouseRight, mMouseY;
 	FName mAction;
-	std::function<void(bool)> mActionFunc;
+	std::function<bool(bool)> mActionFunc;
 
 public:
 
@@ -170,8 +170,7 @@ void DMessageBoxMenu::HandleResult(bool res)
 	{
 		if (mActionFunc)
 		{
-			mActionFunc(res);
-			Close();
+			if (mActionFunc(res)) Close();
 		}
 		else if (mAction == NAME_None && mParentMenu)
 		{
@@ -433,7 +432,9 @@ CCMD (menu_endgame)
                 STAT_Cancel();
 				M_ClearMenus();
 				gi->QuitToTitle();
+				return false;
 			}
+			return true;
 		});
 
 	M_ActivateMenu(newmenu);
@@ -456,6 +457,7 @@ CCMD (menu_quit)
 	DMenu *newmenu = CreateMessageBoxMenu(CurrentMenu, EndString, 0, 500, false, NAME_None, [](bool res)
 	{
 			if (res) gi->ExitFromMenu();
+			return true;
 	});
 
 	M_ActivateMenu(newmenu);
diff --git a/source/core/menu/savegamemanager.cpp b/source/core/menu/savegamemanager.cpp
index 98992f0e6..66b20c4c4 100644
--- a/source/core/menu/savegamemanager.cpp
+++ b/source/core/menu/savegamemanager.cpp
@@ -668,6 +668,7 @@ CCMD(quicksave)
 			{
 				savegameManager.SaveGame(savegameManager.quickSaveSlot, true, true);
 			}
+			return true;
 		});
 
 	M_ActivateMenu(newmenu);
@@ -716,6 +717,7 @@ CCMD(quickload)
 			{
 				savegameManager.LoadGame(savegameManager.quickSaveSlot);
 			}
+			return true;
 		});
 	M_ActivateMenu(newmenu);
 }