diff --git a/rr.c b/rr.c
index 95d07d31..1a9d62af 100644
--- a/rr.c
+++ b/rr.c
@@ -1264,6 +1264,7 @@ ldns_is_rrset(const ldns_rr_list *rr_list)
 {
 	ldns_rr_type t;
 	ldns_rr_class c;
+	uint32_t l;
 	ldns_rdf *o;
 	ldns_rr *tmp;
 	size_t i;
@@ -1276,6 +1277,7 @@ ldns_is_rrset(const ldns_rr_list *rr_list)
 
 	t = ldns_rr_get_type(tmp);
 	c = ldns_rr_get_class(tmp);
+	l = ldns_rr_ttl(tmp);
 	o = ldns_rr_owner(tmp);
 
 	/* compare these with the rest of the rr_list, start with 1 */
@@ -1287,7 +1289,10 @@ ldns_is_rrset(const ldns_rr_list *rr_list)
 		if (c != ldns_rr_get_class(tmp)) {
 			return false;
 		}
-		if (ldns_rdf_compare(o, ldns_rr_owner(tmp)) != 0) {
+		if (l != ldns_rr_ttl(tmp)) {
+			return false;
+		}
+		if (ldns_dname_compare(o, ldns_rr_owner(tmp)) != 0) {
 			return false;
 		}
 	}