diff --git a/board/freescale/imx6ulevk/readme.txt b/board/freescale/imx6ulevk/readme.txt
index b8243dc497..462715c18d 100644
--- a/board/freescale/imx6ulevk/readme.txt
+++ b/board/freescale/imx6ulevk/readme.txt
@@ -20,7 +20,7 @@ Build all components:
 
 You will find in ./output/images/ the following files:
   - imx6ul-14x14-evk.dtb
-  - rootfs.ext2
+  - rootfs.ext4
   - rootfs.tar
   - sdcard.img
   - u-boot.imx