diff --git a/src/mux_pt.c b/src/mux_pt.c
index 603c3603e..64aae14ba 100644
--- a/src/mux_pt.c
+++ b/src/mux_pt.c
@@ -59,3 +59,13 @@ const struct mux_ops mux_pt_ops = {
 	.wake = mux_pt_wake,
 	.name = "PASS",
 };
+
+/* ALPN selection : default mux has empty name */
+static struct alpn_mux_list alpn_mux_pt =
+	{ .token = IST(""), .mode = ALPN_MODE_ANY, .mux = &mux_pt_ops };
+
+__attribute__((constructor))
+static void __mux_pt_init(void)
+{
+	alpn_register_mux(&alpn_mux_pt);
+}