diff --git a/Documentation/boards/imx.rst b/Documentation/boards/imx.rst
index 9b1eb82..de38945 100644
--- a/Documentation/boards/imx.rst
+++ b/Documentation/boards/imx.rst
@@ -42,7 +42,7 @@
 on the destination SD card. To preserve the MBR while writing the rest
 of the image to the card, use::
 
-  dd if=images/barebox-freescale-imx51-babbage.img of=/dev/sdd bs=512 skip=1 seek=1
+  dd if=images/barebox-freescale-imx51-babbage.img of=/dev/sdd bs=1024 skip=1 seek=1
 
 The images can also always be started second stage::