diff --git a/.buildbot/openwrt/build.sh b/.buildbot/openwrt/build.sh
index 63fd8b3..cd27825 100755
--- a/.buildbot/openwrt/build.sh
+++ b/.buildbot/openwrt/build.sh
@@ -52,8 +52,8 @@ make package/kmod-nvme/compile
 make package/kmod-rtc-pcf85063/compile
 make package/nvme-cli/compile
 make package/ansible-core/compile
-make package/asterisk-chan-quectel/compile
-make package/collectd/compile
+make -j1 V=s package/asterisk-chan-quectel/compile
+make -j1 V=s package/collectd/compile
 
 sdkdir=$(pwd)
 cd ${pwd}