diff --git a/en_US.ISO8859-1/books/faq/book.sgml b/en_US.ISO8859-1/books/faq/book.sgml
index b6fba40157..b90da7a10f 100644
--- a/en_US.ISO8859-1/books/faq/book.sgml
+++ b/en_US.ISO8859-1/books/faq/book.sgml
@@ -1199,8 +1199,8 @@
 
 	<answer>
 	  <para>A 3.5&nbsp;inch (1.44&nbsp;MB) floppy can accommodate
-	    1474560&nbsp;bytes of data.  The boot image is exactly
-	    1474560&nbsp;bytes in size.</para>
+	    1,474,560&nbsp;bytes of data.  The boot image is exactly
+	    1,474,560&nbsp;bytes in size.</para>
 
 	  <para>Common mistakes when preparing the boot floppy
 	    are:</para>