diff --git a/meta/classes/image_types.bbclass b/meta/classes/image_types.bbclass
index edd6e1d..dd69612 100644
--- a/meta/classes/image_types.bbclass
+++ b/meta/classes/image_types.bbclass
@@ -13,7 +13,7 @@ def get_imagecmds(d):
 
 runimagecmd () {
 	# Image generation code for image type ${type}
-	ROOTFS_SIZE=`du -ks ${IMAGE_ROOTFS}|awk '{size = $1 * ${IMAGE_OVERHEAD_FACTOR} + ${IMAGE_ROOTFS_EXTRA_SPACE}; print (size > ${IMAGE_ROOTFS_SIZE} ? size : ${IMAGE_ROOTFS_SIZE}) }'`
+	ROOTFS_SIZE=`du -ks ${IMAGE_ROOTFS}|awk '{size = $1 * ${IMAGE_OVERHEAD_FACTOR} + ${IMAGE_ROOTFS_EXTRA_SPACE}; OFMT = "%.0f" ; print (size > ${IMAGE_ROOTFS_SIZE} ? size : ${IMAGE_ROOTFS_SIZE}) }'`
 	${cmd}
 	cd ${DEPLOY_DIR_IMAGE}/
 	rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.${type}