diff --git a/eclass/nas-kernel.eclass b/eclass/nas-kernel.eclass
index f01db80..d8f0a17 100644
--- a/eclass/nas-kernel.eclass
+++ b/eclass/nas-kernel.eclass
@@ -591,7 +591,8 @@ _kernel_src_compile() {
 		cp "${WORKDIR}/config" .config
 		make ${K_NASKERNEL_DTB}
 		cp "${S}"/arch/arm/boot/${K_NASKERNEL_DTB} "${S}"
-		rm .config
+		make mrproper
+		rm -f .config
 	fi
 
 	DEFAULT_KERNEL_SOURCE="${S}" CMD_KERNEL_DIR="${S}" genkernel ${GKARGS} ${K_GENKERNEL_ARGS} \