diff --git a/pipewire-jack/src/pipewire-jack.c b/pipewire-jack/src/pipewire-jack.c
index 2f803a273..25f5599b6 100644
--- a/pipewire-jack/src/pipewire-jack.c
+++ b/pipewire-jack/src/pipewire-jack.c
@@ -5415,7 +5415,7 @@ void jack_port_set_latency_range (jack_port_t *port, jack_latency_callback_mode_
 
 	nframes = jack_get_buffer_size((jack_client_t*)c);
 	if (nframes == 0)
-		n_frames = 1;
+		nframes = 1;
 
 	latency.min_rate = range->min;
 	if (latency.min_rate >= nframes) {