diff --git a/.buildbot/openwrt/build.sh b/.buildbot/openwrt/build.sh
index 60c1996..6dc8343 100755
--- a/.buildbot/openwrt/build.sh
+++ b/.buildbot/openwrt/build.sh
@@ -44,7 +44,8 @@ make defconfig
 echo "CONFIG_PACKAGE_COLLECTD_ENCRYPTED_NETWORK=y" >> .config
 
 make package/i2c-tools/compile
-make $MAKEOPTS package/kernel-custom/compile
+# FIXME: need to extend the regexp for errors
+make $MAKEOPTS V=s package/kernel-custom/compile 2>&1 | grep '^make'
 make package/kmod-i2c-mux-pinctrl/compile
 make package/kmod-rtc-pcf85063/compile
 make package/nvme-cli/compile