diff --git a/Patches.md b/Patches.md
index 23c940d..18b73cd 100644
--- a/Patches.md
+++ b/Patches.md
@@ -12,8 +12,9 @@ Then run the following darcs commands to generate a darcs patch file named `WHAT
 (The name of the file, which is given here as `WHAT.darcs.patch`, is not that important. Use a relevant word or two or maybe the ticket number.)
 
 Write a descriptive patch name and description like these ones (the "patch name" and "patch description" are labelled on these pages as "Message"): changeset:8ba536319689ec8e, changeset:1de4d2c594ee64c8, changeset:d0706d27ea2624b5, changeset:63b28d707b12202f, changeset:c18b934c6a8442f8, changeset:7cadb49b88c03209, changeset:be6139dad72cdf49.
+If, and only if, a single file was modified in the patch it is conventional to begin the "patch name" field with "<FILENAME>:"
 
-And attach it to the ticket.
+Attach the patch to the ticket.
 
 Please use a filename like `*.darcs.patch` so that Trac will display it with proper syntax highlighting.