diff --git a/macOS.ahk b/macOS.ahk
index 707878d..8f64a85 100644
--- a/macOS.ahk
+++ b/macOS.ahk
@@ -18,6 +18,20 @@ GroupAdd, WebCatalog, Ferdium
 send #``
 return
 
+!`::      ; switch between windows of same app
+WinGetClass, OldClass, A
+WinGet, ActiveProcessName, ProcessName, A
+WinGet, WinClassCount, Count, ahk_exe %ActiveProcessName%
+IF WinClassCount = 1
+    Return
+loop, 2 {
+  WinSet, Bottom,, A
+  WinActivate, ahk_exe %ActiveProcessName%
+  WinGetClass, NewClass, A
+  if (OldClass <> "CabinetWClass" or NewClass = "CabinetWClass")
+    break
+}
+
 ; ---------------------------------- Editing ---------------------------------
 !x::  ; cut
 send ^x