diff --git a/p2p/transport/quic/transport.go b/p2p/transport/quic/transport.go
index ab94e40d85..ff98bd8764 100644
--- a/p2p/transport/quic/transport.go
+++ b/p2p/transport/quic/transport.go
@@ -142,6 +142,7 @@ func (t *transport) findListenerForDial(addr ma.Multiaddr) (*listener, error) {
 		for _, l := range ls {
 			lnetw, _, err := manet.DialArgs(l.Multiaddr())
 			if err != nil {
+				log.Debugw("failed to parse listener multiaddr", "multiaddr", l.Multiaddr(), "error", err)
 				continue
 			}
 			if lnetw == netw {
diff --git a/p2p/transport/webtransport/transport.go b/p2p/transport/webtransport/transport.go
index 458516ed4b..2f7fe9d5a7 100644
--- a/p2p/transport/webtransport/transport.go
+++ b/p2p/transport/webtransport/transport.go
@@ -201,6 +201,7 @@ func (t *transport) findListenerForDial(addr ma.Multiaddr) (*listener, error) {
 	for _, l := range t.listeners {
 		lnetw, _, err := manet.DialArgs(l.multiaddr)
 		if err != nil {
+			log.Debugw("failed to parse listener multiaddr", "multiaddr", l.multiaddr, "error", err)
 			continue
 		}
 		if lnetw == netw {