diff --git a/src/libknot/dname.c b/src/libknot/dname.c
index 682d6367f7d7fbf55a43f6457bc89186d6df85b2..0b81e30da270e44a085c58f3b41f1095fd4101f2 100644
--- a/src/libknot/dname.c
+++ b/src/libknot/dname.c
@@ -74,6 +74,9 @@ knot_dname_t *knot_dname_parse(const uint8_t *pkt, size_t *pos, size_t maxpos)
 
 knot_dname_t *knot_dname_copy(const knot_dname_t *name)
 {
+	if (name == NULL)
+		return NULL;
+
 	return knot_dname_copy_part(name, knot_dname_size(name));
 }