diff --git a/profiles/audio/avdtp.c b/profiles/audio/avdtp.c
index 4be2d25..f38188f 100644
--- a/profiles/audio/avdtp.c
+++ b/profiles/audio/avdtp.c
@@ -1033,7 +1033,8 @@ static void finalize_discovery(struct avdtp *session, int err)
 	if (discover->id > 0)
 		g_source_remove(discover->id);
 
-	discover->cb(session, session->seps, err ? &avdtp_err : NULL,
+	if (discover->cb)
+		discover->cb(session, session->seps, err ? &avdtp_err : NULL,
 							discover->user_data);
 	g_free(discover);
 	session->discover = NULL;