diff --git a/master.cfg b/master.cfg
index 3a189c9..d0fd13b 100644
--- a/master.cfg
+++ b/master.cfg
@@ -197,10 +197,11 @@ def SendRootMessageGDBTesters (branch, change, rev,
     if not istrysched:
         mail['To'] = GDB_MAIL_TO
         mailto = GDB_MAIL_TO
+        mail['Message-Id'] = "<%s@gdb-build>" % rev
     else:
         mail['To'] = try_to
         mailto = try_to
-    mail['Message-Id'] = "<%s-try@gdb-build>" % rev
+        mail['Message-Id'] = "<%s-try@gdb-build>" % rev
 
     s = smtplib.SMTP ('localhost')
     s.sendmail (GDB_MAIL_FROM, [ mailto ], mail.as_string ())