diff --git a/sssd.spec b/sssd.spec
index 59d3afb..3c41453 100644
--- a/sssd.spec
+++ b/sssd.spec
@@ -309,6 +309,9 @@ A utility library for FreeIPA to map Windows SIDs to Unix user/group IDs.
 Summary:        The SSSD D-Bus responder helper library
 License:        GPL-3.0-or-later
 Group:          System/Libraries
+# Even though sssd has obsoleted simpleifp, the plan here is to retain ABI
+# compatibility with the existing SUSE 15.x product line. ...at least, until
+# sssd completely removes SIFP from source.
 
 %description -n libsss_simpleifp0
 This subpackage provides a library that simplifies the D-Bus API for