diff --git a/CHANGES b/CHANGES
index 198231a..b429dd7 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,9 +1,12 @@
-0.1.36-pre (2019-10-25):
+0.1.36-pre (2019-11-08):
     - minor documentation cleanup: bgpq3 supports much more vendors
     than just Cisco and Juniper. Copyright years updated.
     - Nokia SR OS "classic" actually supports aggregation and
     and more-specific filtering in prefix-lists. Thanks to mfisher128
     for reporting.
+    - change log level for prefixes with wrong address family from error
+    to debugging: it's perfectly correct to have prefixes of different
+    families in route-sets. Thanks to Jay Ford for suggestion.
 
 0.1.35 (2018-11-30):
     - initial support for Juniper route-filter-lists (JunOS 16.2+).
diff --git a/sx_prefix.c b/sx_prefix.c
index 6292a78..d5ce839 100644
--- a/sx_prefix.c
+++ b/sx_prefix.c
@@ -209,7 +209,7 @@ sx_prefix_range_parse(struct sx_radix_tree* tree, int af, int maxlen,
 	};
 	*d = '^';
 	if (af && p.family != af) {
-		sx_report(SX_ERROR, "Ignoring prefix %s, wrong af %i\n", text,
+		SX_DEBUG(debug_expander, "Ignoring prefix %s, wrong af %i\n", text,
 			p.family);
 		return 0;
 	};