diff --git a/projects/qt/build.sh b/projects/qt/build.sh
index 57de861bc..22929ccd9 100755
--- a/projects/qt/build.sh
+++ b/projects/qt/build.sh
@@ -26,7 +26,7 @@ sed -i -e "s/QMAKE_CFLAGS_OPTIMIZE_FULL = -O3/QMAKE_CFLAGS_OPTIMIZE_FULL = -O1/g
 
 # build project
 cd $WORK
-MAKEFLAGS=-j$(nproc) $SRC/qt/configure -platform linux-clang-libc++ -static -opensource -confirm-license -no-opengl -nomake tests -nomake examples -prefix $PWD/qtbase -D QT_NO_DEPRECATED_WARNINGS
+MAKEFLAGS=-j$(nproc) $SRC/qt/configure -qt-libmd4c -platform linux-clang-libc++ -static -opensource -confirm-license -no-opengl -nomake tests -nomake examples -prefix $PWD/qtbase -D QT_NO_DEPRECATED_WARNINGS
 make -j$(nproc)
 
 # prepare corpus files