diff --git a/quassel.spec b/quassel.spec
index 63d46da..5f95b9d 100644
--- a/quassel.spec
+++ b/quassel.spec
@@ -181,10 +181,10 @@ FAKE_BUILDTIME=$(LC_ALL=C date -r %{_sourcedir}/%{name}.changes '+%%H:%%M:%%S')
 sed -i "s/__TIME__/\"$FAKE_BUILDTIME\"/" src/common/quassel.cpp
 
 %cmake_kf5 -d build -- -DUSE_QT5=ON -DWITH_WEBENGINE=ON -DWITH_KDE=ON
-%make_build
+make %{?_smp_mflags}
 cd ..
 %cmake_kf5 -d build-qt5 -- -DUSE_QT5=ON -DWITH_WEBENGINE=ON -DWITH_KDE=OFF
-%make_build
+make %{?_smp_mflags}
 
 %install
 %kf5_makeinstall -C build