diff --git a/build_win32.cmd b/build_win32.cmd
index 8fb49b4a..79793c2e 100644
--- a/build_win32.cmd
+++ b/build_win32.cmd
@@ -11,6 +11,7 @@ SET QTDIR=%POKERTH_WIN32_LIB_DIR%\qt
 
 qmake DEFINES+=BOOST_USE_WINDOWS_H pokerth.pro
 mingw32-make release
+if not errorlevel 0 exit /b %ERRORLEVEL%
 REM Add automatic packaging or copying here.
 mingw32-make distclean
 
diff --git a/build_win64.cmd b/build_win64.cmd
new file mode 100644
index 00000000..043fd5cd
--- /dev/null
+++ b/build_win64.cmd
@@ -0,0 +1,17 @@
+@echo off
+echo PokerTH Win mingw prepare build script version 1.0.
+echo Copyright (C) 2010 Lothar May. License: GPL 2 or later
+echo BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+echo FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+echo.
+
+SET PATH=%POKERTH_WIN64_LIB_DIR%\qt\bin;%POKERTH_WIN64_LIB_DIR%\mingw64\bin;%PATH%
+SET QMAKESPEC=win32-g++
+SET QTDIR=%POKERTH_WIN64_LIB_DIR%\qt
+
+qmake DEFINES+=BOOST_USE_WINDOWS_H pokerth.pro
+mingw32-make release
+if not errorlevel 0 exit /b %ERRORLEVEL%
+REM Add automatic packaging or copying here.
+mingw32-make distclean
+