diff --git a/libs/backends/jack/weak_libjack.c b/libs/backends/jack/weak_libjack.c
index 02705f44af..1bd3305dfc 100644
--- a/libs/backends/jack/weak_libjack.c
+++ b/libs/backends/jack/weak_libjack.c
@@ -191,6 +191,9 @@ int have_libjack (void) {
 
 /* dedicated support for jack_client_open(,..) variable arg function macro */
 func_t WJACK_get_client_open(void) {
+	if (_status == -1) {
+		init_weak_jack();
+	}
 	return _j._client_open;
 }