diff --git a/GpApp/Settings.cpp b/GpApp/Settings.cpp
index ec9fcb7..78d9aa9 100644
--- a/GpApp/Settings.cpp
+++ b/GpApp/Settings.cpp
@@ -726,6 +726,8 @@ void DoSoundPrefs (void)
 	PLError_t		theErr;
 	short			itemHit;
 	Boolean			leaving;
+
+	PortabilityLayer::WindowManager *wm = PortabilityLayer::WindowManager::GetInstance();
 	
 	BringUpDialog(&prefDlg, kSoundPrefsDialID, nullptr);
 
@@ -741,6 +743,9 @@ void DoSoundPrefs (void)
 	SetDialogItemValue(prefDlg, kPlayMusicItem, (short)wasPlay);
 	leaving = false;
 
+	Window *exclStack = prefDlg->GetWindow();
+	wm->SwapExclusiveWindow(exclStack);	// Push exclusive window
+
 	while (!leaving)
 	{
 		itemHit = prefDlg->ExecuteModal(SoundFilter);
@@ -844,6 +849,8 @@ void DoSoundPrefs (void)
 		}
 	}
 
+	wm->SwapExclusiveWindow(exclStack);	// Pop exclusive window
+
 	prefDlg->Destroy();
 }