diff --git a/eclass/nas-kernel.eclass b/eclass/nas-kernel.eclass
index bbcc9a7..0f35ae9 100644
--- a/eclass/nas-kernel.eclass
+++ b/eclass/nas-kernel.eclass
@@ -603,6 +603,7 @@ _kernel_src_compile() {
 	fi
 
 	ln -sf "${S}" /usr/src/linux
+	emake mrproper
 
 	DEFAULT_KERNEL_SOURCE="${S}" CMD_KERNEL_DIR="${S}" KERNEL_DIR="${S}" genkernel ${GKARGS} ${K_GENKERNEL_ARGS} \
 		--kerneldir="${S}" \