diff --git a/.buildbot/openwrt/build.sh b/.buildbot/openwrt/build.sh
index bbdaa13..c6ec449 100755
--- a/.buildbot/openwrt/build.sh
+++ b/.buildbot/openwrt/build.sh
@@ -41,7 +41,9 @@ echo "CONFIG_KERNEL_NVME_HWMON=y" >> .config
 echo "CONFIG_KERNEL_NVME_MULTIPATH=n" >> .config
 
 # Kernel modules
-TARGET_BUILD=1 make target/linux
+make target/linux/clean
+make target/linux/prepare
+make target/linux
 
 ${MAKE} package/i2c-tools/compile
 make package/kmod-i2c-mux-pinctrl/compile
@@ -53,7 +55,7 @@ ${MAKE} package/asterisk-chan-quectel/compile
 ${MAKE} package/collectd/compile
 
 # Kernel image
-TARGET_BUILD=1 make target/linux
+make target/linux
 
 sdkdir=$(pwd)
 cd ${pwd}