diff --git a/build_release_windows.bat b/build_release_windows.bat
index 7d1eb77..d273c99 100755
--- a/build_release_windows.bat
+++ b/build_release_windows.bat
@@ -71,8 +71,10 @@ cd ..
 
 REM Qt5 deployment
 SET QMLDIR=%WORKSPACE%/flightgear/src/GUI/qml
-%QT5SDK32%\bin\windeployqt --release --list target --qmldir %QMLDIR% %WORKSPACE%/install/msvc140/bin/fgfs.exe
-%QT5SDK64%\bin\windeployqt --release --list target --qmldir %QMLDIR% %WORKSPACE%/install/msvc140-64/bin/fgfs.exe
+
+REM Don't copy the compiler runtime libs, since it includes potentially older UCrtbase.
+%QT5SDK32%\bin\windeployqt --release --list target --no-compiler-runtime --qmldir %QMLDIR% %WORKSPACE%/install/msvc140/bin/fgfs.exe
+%QT5SDK64%\bin\windeployqt --release --list target --no-compiler-runtime --qmldir %QMLDIR% %WORKSPACE%/install/msvc140-64/bin/fgfs.exe
 
 REM build setup
 ECHO Packaging root is %WORKSPACE%