diff --git a/trunk/HACKING b/trunk/HACKING
index 7381a48..d89d697 100644
--- a/trunk/HACKING
+++ b/trunk/HACKING
@@ -44,6 +44,10 @@ gnucash-patches mailing list, though I will also accept patches
 submitted to me directly. I will handle getting the patches added into
 SVN. You can also add the patch to a bug report in bugzilla if you wish.
 
+Try to wrap text in any files you work on to 75 characters; keeping all
+documentation files wrapped at the same column will help make diffs more
+accurate.
+
 I would like writers to also let other know their intentions of which
 section they wish to tackle. Please forward this to gnucash-devel so
 that people can say 'hey I'm doing that already' or some such.