diff --git a/en_US.ISO8859-1/books/faq/book.xml b/en_US.ISO8859-1/books/faq/book.xml
index 5b87877cea..4fa10599cd 100644
--- a/en_US.ISO8859-1/books/faq/book.xml
+++ b/en_US.ISO8859-1/books/faq/book.xml
@@ -6316,7 +6316,7 @@ ATDT1234567</programlisting>
 	    or run this command after the system is up and
 	    running:</para>
 
-	  <screen>&prompt.user; <userinput>dmesg | grep -E "^sio[0-9]"</userinput>
+	  <screen>&prompt.user; <userinput>grep -E "^(sio|uart)[0-9] &lt; /var/run/dmesg.boot"</userinput>
 sio0: &lt;16550A-compatible COM port&gt; port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
 sio0: type 16550A
 sio1: &lt;16550A-compatible COM port&gt; port 0x2f8-0x2ff irq 3 on acpi0