diff --git a/include/kernel-build.mk b/include/kernel-build.mk
index 5e4534281..0ef00de35 100644
--- a/include/kernel-build.mk
+++ b/include/kernel-build.mk
@@ -57,6 +57,7 @@ ifeq ($(CONFIG_TARGET_ROOTFS_INITRAMFS),y)
 	echo 'CONFIG_INITRAMFS_ROOT_GID=0' >> $(LINUX_DIR)/.config
 	mkdir -p $(BUILD_DIR)/root/etc/init.d
 	$(CP) ../generic-2.6/files/init $(BUILD_DIR)/root/
+	$(CP) ../generic-2.6/files/postinit $(BUILD_DIR)/root/
 else
 	rm -f $(BUILD_DIR)/root/init $(BUILD_DIR)/root/etc/init.d/S00initramfs
 	echo 'CONFIG_INITRAMFS_SOURCE=""' >> $(LINUX_DIR)/.config