diff --git a/HACKING b/HACKING
index a1faebd2d5d1f14b7be14218754023d173dc185c..cb9385a03ca5f3a2db7032a57842d06b9e2584ca 100644
--- a/HACKING
+++ b/HACKING
@@ -71,6 +71,7 @@ Follow these steps:
 
 	versions
 	configure.in
+	doc/Protocol-A.texi
 
 * Fix the Copyright statement in these files: