diff --git a/board/wandboard/genimage.cfg b/board/wandboard/genimage.cfg
index 32c7c16c8d..b23a91b0b8 100644
--- a/board/wandboard/genimage.cfg
+++ b/board/wandboard/genimage.cfg
@@ -2,7 +2,7 @@
 #
 # The SD card must have at least 1 MB free at the beginning.
 # U-Boot and its environment are dumped as is.
-# A single root filesystem partition is required (Ext2 in this case).
+# A single root filesystem partition is required (Ext4 in this case).
 #
 # For details about the layout, see:
 # http://wiki.wandboard.org/index.php/Boot-process
@@ -25,7 +25,7 @@ image sdcard.img {
 
   partition rootfs {
     partition-type = 0x83
-    image = "rootfs.ext2"
+    image = "rootfs.ext4"
     size = 512M
   }
 }