diff --git a/spa/plugins/alsa/alsa-pcm-sink.c b/spa/plugins/alsa/alsa-pcm-sink.c
index 6387ae17a..f13b0b8b8 100644
--- a/spa/plugins/alsa/alsa-pcm-sink.c
+++ b/spa/plugins/alsa/alsa-pcm-sink.c
@@ -707,6 +707,7 @@ impl_node_port_set_param(void *object,
 		this->port_info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
 		this->port_params[PORT_Latency].user++;
 		emit_port_info(this, false);
+		res = 0;
 		break;
 	}
 	default: