1 files changed, 2 insertions, 2 deletions

diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index 0c27f298fc..d6cc87f79d 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -59,8 +59,8 @@ IMAGE_CMD_ext3 = "oe_mkext234fs ext3 ${EXTRA_IMAGECMD}"
 IMAGE_CMD_ext4 = "oe_mkext234fs ext4 ${EXTRA_IMAGECMD}"
 
 IMAGE_CMD_btrfs () {
-        touch ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs
-        mkfs.btrfs -b `expr ${ROOTFS_SIZE} \* 1024` ${EXTRA_IMAGECMD} -r ${IMAGE_ROOTFS} ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs
+        dd if=/dev/zero of=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs count=${ROOTFS_SIZE} bs=1024
+        mkfs.btrfs ${EXTRA_IMAGECMD} -r ${IMAGE_ROOTFS} ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.btrfs
 }
 
 IMAGE_CMD_squashfs = "mksquashfs ${IMAGE_ROOTFS} ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.squashfs ${EXTRA_IMAGECMD} -noappend"