diff --git a/src/tcpcheck.c b/src/tcpcheck.c
index b4b032ef0..ce82ea507 100644
--- a/src/tcpcheck.c
+++ b/src/tcpcheck.c
@@ -1512,7 +1512,7 @@ enum tcpcheck_eval_ret tcpcheck_eval_connect(struct check *check, struct tcpchec
 	 */
 	if (!s || ((connect->options & TCPCHK_OPT_DEFAULT_CONNECT) && check->mux_proto) ||
 	    connect->mux_proto ||
-	    (!conn_is_ssl(conn) || (!connect->alpn && !check->alpn_str))) {
+	    (!conn_is_ssl(conn) || (!connect->alpn && !check->alpn_str && !s->ssl_ctx.alpn_str))) {
 		const struct mux_ops *mux_ops;
 
 		TRACE_DEVEL("try to install mux now", CHK_EV_TCPCHK_CONN, check);