diff --git a/src/game/client/menu.h b/src/game/client/menu.h
index 80f14eae70..fb813f1ac0 100644
--- a/src/game/client/menu.h
+++ b/src/game/client/menu.h
@@ -41,6 +41,10 @@ class CHudMenu : public CHudElement, public vgui::Panel
 	bool IsMenuOpen( void );
 	void SelectMenuItem( int menu_item );
 
+#ifdef MAPBASE
+	bool IsMenuMapDefined() const { return m_bMapDefinedMenu; }
+#endif
+
 private:
 	virtual void OnThink();
 	virtual void Paint();
diff --git a/src/game/client/voice_menu.cpp b/src/game/client/voice_menu.cpp
index c583634961..e9f4c544ec 100644
--- a/src/game/client/voice_menu.cpp
+++ b/src/game/client/voice_menu.cpp
@@ -50,6 +50,12 @@ void OpenVoiceMenu( int index )
 	if ( !pMenu )
 		return;
 
+#ifdef MAPBASE
+	// Don't override map-defined menus
+	if ( pMenu->IsMenuMapDefined() && pMenu->IsMenuOpen() )
+		return;
+#endif
+
 	// if they hit the key again, close the menu
 	if ( g_ActiveVoiceMenu == index )
 	{