diff --git a/openwrt/target/linux/image/tgz.mk b/openwrt/target/linux/image/tgz.mk
index 69483299f..544aeae5c 100644
--- a/openwrt/target/linux/image/tgz.mk
+++ b/openwrt/target/linux/image/tgz.mk
@@ -1,14 +1,8 @@
-$(KDIR)/vmlinux.gz: $(KDIR)/vmlinux
-	gzip -c -vf9 < $< > $@
+$(KDIR)/root.tar.gz:
+	tar -zcf $@ --owner=root --group=root -C $(KDIR)/root/ .
 
-$(KDIR)/rootfs.tar.gz: $(KDIR)/vmlinux.gz
-	tar -cf $(KDIR)/rootfs.tar --owner=root --group=root -C $(KDIR)/ ./vmlinux.gz
-	tar -rf $(KDIR)/rootfs.tar --owner=root --group=root -C $(KDIR)/root/ .
-	gzip -f9 $(KDIR)/rootfs.tar
-
-tgz-install: $(KDIR)/rootfs.tar.gz
-	cp $(KDIR)/vmlinux.gz $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-vmlinux.gz
-	cp $(KDIR)/rootfs.tar.gz $(BIN_DIR)/openwrt-$(BOARD)-$(KERNEL)-rootfs.tar.gz
+tgz-install: $(KDIR)/root.tar.gz
+	$(MAKE) -C $(BOARD) install KERNEL="$(KERNEL)" FS="tgz"
 
 prepare:
 compile: