diff --git a/development/cmake/build5.bat b/development/cmake/build5.bat
index 53699c4560..2acfe7c5b7 100644
--- a/development/cmake/build5.bat
+++ b/development/cmake/build5.bat
@@ -81,14 +81,14 @@ if [%2]==[] (
 
 if "%1%" == "devel" (
 	REM Build solution to develop LyX
-	cmake %LYX_SOURCE% -GNinja -G%USED_STUDIO% -DLYX_ENABLE_CXX11=ON -DLYX_MERGE_FILES=0 -DLYX_NLS=1 -DLYX_INSTALL=0 -DLYX_RELEASE=0 -DLYX_CONSOLE=FORCE %DEPENDENCIES_DOWNLOAD%
+	cmake %LYX_SOURCE% -GNinja -G%USED_STUDIO% -DLYX_ENABLE_CXX11=ON -DLYX_USE_QT=QT5 -DLYX_MERGE_FILES=0 -DLYX_NLS=1 -DLYX_INSTALL=0 -DLYX_RELEASE=0 -DLYX_CONSOLE=FORCE %DEPENDENCIES_DOWNLOAD%
 	msbuild lyx.sln /p:Configuration=Debug /t:ALL_BUILD
 )
 
 if "%1%" == "install" (
 	REM Build solution to develop LyX
 	REM set -DLYX_MERGE_REBUILD and -DLYX_MERGE_FILES to 1 for a version released with an installer
-	cmake %LYX_SOURCE% -G%USED_STUDIO% -DLYX_ENABLE_CXX11=ON -DLYX_MERGE_REBUILD=1 -DLYX_MERGE_FILES=1 -DLYX_NLS=1 -DLYX_INSTALL=1 -DLYX_RELEASE=1 -DLYX_CONSOLE=OFF %DEPENDENCIES_DOWNLOAD% 
+	cmake %LYX_SOURCE% -G%USED_STUDIO% -DLYX_ENABLE_CXX11=ON -DLYX_USE_QT=QT5 -DLYX_MERGE_REBUILD=1 -DLYX_MERGE_FILES=1 -DLYX_NLS=1 -DLYX_INSTALL=1 -DLYX_RELEASE=1 -DLYX_CONSOLE=OFF %DEPENDENCIES_DOWNLOAD% 
 	msbuild lyx.sln         /p:Configuration=Release /t:ALL_BUILD
 	msbuild INSTALL.vcxproj /p:Configuration=Release
 )