diff --git a/aegisub/frame_main.cpp b/aegisub/frame_main.cpp
index 40a9b3456..ff409bacc 100644
--- a/aegisub/frame_main.cpp
+++ b/aegisub/frame_main.cpp
@@ -297,7 +297,10 @@ void FrameMain::InitMenu() {
 	AppendBitmapMenuItem (fileMenu,Menu_Tools_Properties, _("&Properties..."), _("Open script properties window"),wxBITMAP(properties_toolbutton));
 	AppendBitmapMenuItem (fileMenu,Menu_Tools_Attachments, _("&Attachments..."), _("Open the attachment list"), wxBITMAP(attach_button));
 	fileMenu->AppendSeparator();
+#ifndef __APPLE__
+	// Doesn't work on Mac, only one instance is ever allowed there from OS side
 	AppendBitmapMenuItem(fileMenu,Menu_File_New_Window, _("New Window"), _("Open a new application window"),wxBITMAP(blank_button));
+#endif
 	AppendBitmapMenuItem(fileMenu,Menu_File_Exit, MakeHotkeyText(_("E&xit"), _T("Exit")), _("Exit the application"),wxBITMAP(exit_button));
 	MenuBar->Append(fileMenu, _("&File"));