diff --git a/cyrus-imapd.spec b/cyrus-imapd.spec
index 859ab1f..226d4e4 100644
--- a/cyrus-imapd.spec
+++ b/cyrus-imapd.spec
@@ -424,7 +424,9 @@ mv %buildroot/%_mandir/man8/master.8 %buildroot/%_mandir/man8/master.8cyrus
 # Rename 'httpd' manpage to avoid clash with Apache
 mv %buildroot/%_mandir/man8/httpd.8 %buildroot/%_mandir/man8/httpd.8cyrus
 
-# Old cyrus packages used to keep some executables in /usr/lib/cyrus-imapd
+# Old cyrus packages used to keep the deliver executable in
+# /usr/lib/cyrus-imapd, and MTA configurations might rely on this.
+# Remove this hack in the F30 timeframe.
 # RF hardcoded-library-path in %%buildroot/usr/lib/cyrus-imapd
 mkdir %buildroot/usr/lib/cyrus-imapd
 pushd %buildroot/usr/lib/cyrus-imapd