diff --git a/source/Configuration/PropertySheetHelper.h b/source/Configuration/PropertySheetHelper.h
index 1c4feb10..81422bef 100644
--- a/source/Configuration/PropertySheetHelper.h
+++ b/source/Configuration/PropertySheetHelper.h
@@ -14,7 +14,6 @@ public:
 	virtual ~CPropertySheetHelper(){}
 
 	void FillComboBox(HWND window, int controlid, LPCTSTR choices, int currentchoice);
-	void SetSlot(UINT slot, SS_CARDTYPE newCardType);
 	std::string BrowseToFile(HWND hWindow, const TCHAR* pszTitle, const TCHAR* REGVALUE, const TCHAR* FILEMASKS);
 	void SaveStateUpdate();
 	int SaveStateSelectImage(HWND hWindow, const TCHAR* pszTitle, bool bSave);
@@ -38,6 +37,7 @@ public:
 	void ConfigSaveApple2Type(eApple2Type apple2Type);
 
 private:
+	void SetSlot(UINT slot, SS_CARDTYPE newCardType);
 	bool IsOkToSaveLoadState(HWND hWnd, const bool bConfigChanged);
 	bool IsOkToRestart(HWND hWnd);
 	void SaveComputerType(eApple2Type NewApple2Type);