diff --git a/faq/ubi.xml b/faq/ubi.xml
index 3a9c255..76ad9d9 100644
--- a/faq/ubi.xml
+++ b/faq/ubi.xml
@@ -707,7 +707,7 @@ $ modprobe nandsim second_id_byte=0x36
 <p>See <a href="nand.html#L_nand_nandsim">here</a> for more information
about
 the NAND simulator.</p>

-<p>To ensure that you have fake MTD devices, run "<code>cat
/prof/mtd</code>".
+<p>To ensure that you have fake MTD devices, run "<code>cat
/proc/mtd</code>".