diff --git a/manual/faq.rst b/manual/faq.rst
index 89c4f0283d..ab3021ee9b 100644
--- a/manual/faq.rst
+++ b/manual/faq.rst
@@ -734,7 +734,13 @@ directory in your home directory.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 There can be several causes for this:
 
-    * If you are on Windows XP, try installing |app| `version 1.48 <http://download.calibre-ebook.com/1.48.0/>`_. |app| 2.0 and newer use Qt 5 which is known to be incompatible with *some* Windows XP machines. Simply un-install calibre and then install version 1.48, doing so will not affect your books/settings.
+    * If you are on Windows XP, or on a computer with a processor that does not
+      support SSE2 (such as AMD processors from before 2003) try installing
+      |app| `version 1.48 <http://download.calibre-ebook.com/1.48.0/>`_. |app|
+      2.0 and newer use Qt 5 which is known to be incompatible with Windows XP
+      machines, and requires SSE2. Simply un-install calibre and then install
+      version 1.48, doing so will not affect your books/settings.
+
     * If you get an error about calibre not being able to open a file because it is in use by another program, do the following:
 
        * Uninstall calibre