diff --git a/src/calibre/manual/faq.rst b/src/calibre/manual/faq.rst
index b93444f4c3..781048666b 100644
--- a/src/calibre/manual/faq.rst
+++ b/src/calibre/manual/faq.rst
@@ -376,7 +376,9 @@ be printed to it. If the debug output contains a line that looks like::
 
 then the problem is probably a corrupted font cache. You can clear the cache by following these
 `instructions <http://www.macworld.com/article/139383/2009/03/fontcacheclear.html>`_. If that doesn't
-solve it, look for a corrupted font file on your system, in ~/Library/Fonts or the like.
+solve it, look for a corrupted font file on your system, in ~/Library/Fonts or the like. An easy way to
+check for corrupted fonts in OS X is to start the "Font Book" application, select all fonts and then in the File
+menu, choose "Validate fonts".
 
 My antivirus program claims |app| is a virus/trojan?
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