diff --git a/source/param/loadparm.c b/source/param/loadparm.c
index 12015540bb0..f1bac54251a 100644
--- a/source/param/loadparm.c
+++ b/source/param/loadparm.c
@@ -8698,6 +8698,7 @@ bool lp_load(const char *pszFname,
 		}
 
 		if (lp_config_backend_is_registry()) {
+			/* config backend changed to registry in config file */
 			/*
 			 * We need to use this extra global variable here to
 			 * survive restart: init_globals uses this as a default