diff --git a/src/os/windows/win32.cpp b/src/os/windows/win32.cpp
--- a/src/os/windows/win32.cpp
+++ b/src/os/windows/win32.cpp
@@ -707,38 +707,6 @@ int OTTDStringCompare(const char *s1, co
 	return CompareString(MAKELCID(_current_language->winlangid, SORT_DEFAULT), NORM_IGNORECASE, s1_buf, -1, s2_buf, -1);
 }
 
-/**
- * Is the current Windows version Vista or later?
- * @return True if the current Windows is Vista or later.
- */
-bool IsWindowsVistaOrGreater()
-{
-	typedef BOOL (WINAPI * LPVERIFYVERSIONINFO)(LPOSVERSIONINFOEX, DWORD, DWORDLONG);
-	typedef ULONGLONG (NTAPI * LPVERSETCONDITIONMASK)(ULONGLONG, DWORD, BYTE);
-#ifdef UNICODE
-	static LPVERIFYVERSIONINFO _VerifyVersionInfo = (LPVERIFYVERSIONINFO)GetProcAddress(GetModuleHandle(_T("Kernel32")), "VerifyVersionInfoW");
-#else
-	static LPVERIFYVERSIONINFO _VerifyVersionInfo = (LPVERIFYVERSIONINFO)GetProcAddress(GetModuleHandle(_T("Kernel32")), "VerifyVersionInfoA");
-#endif
-	static LPVERSETCONDITIONMASK _VerSetConditionMask = (LPVERSETCONDITIONMASK)GetProcAddress(GetModuleHandle(_T("Kernel32")), "VerSetConditionMask");
-
-	if (_VerifyVersionInfo != nullptr && _VerSetConditionMask != nullptr) {
-		OSVERSIONINFOEX osvi = { sizeof(osvi), 0, 0, 0, 0, {0}, 0, 0 };
-		DWORDLONG dwlConditionMask = 0;
-		dwlConditionMask = _VerSetConditionMask(dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
-		dwlConditionMask = _VerSetConditionMask(dwlConditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
-		dwlConditionMask = _VerSetConditionMask(dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
-
-		osvi.dwMajorVersion = 6;
-		osvi.dwMinorVersion = 0;
-		osvi.wServicePackMajor = 0;
-
-		return _VerifyVersionInfo(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR, dwlConditionMask) != FALSE;
-	} else {
-		return LOBYTE(GetVersion()) >= 6;
-	}
-}
-
 #ifdef _MSC_VER
 /* Based on code from MSDN: https://msdn.microsoft.com/en-us/library/xcb2z8hs.aspx */
 const DWORD MS_VC_EXCEPTION = 0x406D1388;