diff --git a/.buildbot/openwrt/build.sh b/.buildbot/openwrt/build.sh
index a4b7bed..94de44a 100755
--- a/.buildbot/openwrt/build.sh
+++ b/.buildbot/openwrt/build.sh
@@ -34,6 +34,8 @@ sed -i "s/\(packages.git\)\^.*/\1;openwrt-${OPENWRT_BRANCH}/g" feeds.conf
 make defconfig
 # Enable collectd network encryption
 echo "CONFIG_PACKAGE_COLLECTD_ENCRYPTED_NETWORK=y" >> .config
+# No more iconv stub for asterisk-chan-quectel which needs iconv.h
+echo "CONFIG_BUILD_NLS=y" >> .config
 
 ${MAKE} package/i2c-tools/compile
 make package/kmod-i2c-mux-pinctrl/compile