diff --git a/miniwin/minimfc/include/minimfc.h b/miniwin/minimfc/include/minimfc.h
index 76c20b91..6a127248 100644
--- a/miniwin/minimfc/include/minimfc.h
+++ b/miniwin/minimfc/include/minimfc.h
@@ -130,8 +130,8 @@ struct CMenu {
 
 struct CWinApp {
 	CWinApp();
-	virtual ~CWinApp();
-	virtual BOOL InitInstance();
+	virtual ~CWinApp() = default;
+	virtual BOOL InitInstance() = 0;
 	virtual int ExitInstance();
 };
 
@@ -188,10 +188,7 @@ inline int GetSystemMetrics(int nIndex)
 	return 0;
 }
 
-inline BOOL GetVersionEx(OSVERSIONINFOA* version)
-{
-	return TRUE;
-}
+BOOL GetVersionEx(OSVERSIONINFOA* version);
 
 void GlobalMemoryStatus(MEMORYSTATUS* memory_status);
 
diff --git a/miniwin/minimfc/src/minimfc.cpp b/miniwin/minimfc/src/minimfc.cpp
index a74fc600..d72d6e8f 100644
--- a/miniwin/minimfc/src/minimfc.cpp
+++ b/miniwin/minimfc/src/minimfc.cpp
@@ -21,20 +21,13 @@ CWinApp::CWinApp()
 		abort();
 	}
 	wndTop = this;
-}
 
-CWinApp::~CWinApp() = default;
-
-BOOL CWinApp::InitInstance()
-{
 	if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK)) {
 		SDL_Log("SDL_Init: %s\n", SDL_GetError());
-		return FALSE;
+		return;
 	}
 
 	window = SDL_CreateWindow(title, 640, 480, 0);
-
-	return TRUE;
 }
 
 int CWinApp::ExitInstance()
@@ -73,9 +66,7 @@ int main(int argc, char* argv[])
 		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "No CWinApp created");
 		abort();
 	}
-	if (!wndTop->InitInstance()) {
-		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "CWinApp::InitInstance failed");
-	}
+	wndTop->InitInstance();
 
 	SDL_Event event;
 	bool running = true;
@@ -137,6 +128,15 @@ BOOL GetWindowRect(HWND hWnd, RECT* Rect)
 	return TRUE;
 }
 
+BOOL GetVersionEx(OSVERSIONINFOA* version)
+{
+	version->dwOSVersionInfoSize = sizeof(OSVERSIONINFOA);
+	version->dwMajorVersion = 5; // Win2k/XP
+	version->dwPlatformId = 2;   // NT
+	version->dwBuildNumber = 0x500;
+	return TRUE;
+}
+
 void OutputDebugString(const char* lpOutputString)
 {
 	SDL_LogDebug(SDL_LOG_CATEGORY_APPLICATION, "%s", lpOutputString);