diff --git a/src/daemon/media-session.d/alsa-monitor.conf b/src/daemon/media-session.d/alsa-monitor.conf
index f34c396fe..cb260a70e 100644
--- a/src/daemon/media-session.d/alsa-monitor.conf
+++ b/src/daemon/media-session.d/alsa-monitor.conf
@@ -1,8 +1,11 @@
 # ALSA monitor config file #
 
 properties = {
-    # Create a JACK device.
-    #alsa.jack-device = true
+    # Create a JACK device. This is not enabled by default because
+    # it requires that the PipeWire JACK replacement libraries are
+    # not used by the session manager, in order to be able to
+    # connect to the real JACK server.
+    #alsa.jack-device = false
 }
 
 rules = [
diff --git a/src/examples/media-session/alsa-monitor.c b/src/examples/media-session/alsa-monitor.c
index fe85a8979..24e39f885 100644
--- a/src/examples/media-session/alsa-monitor.c
+++ b/src/examples/media-session/alsa-monitor.c
@@ -1047,7 +1047,7 @@ int sm_alsa_monitor_start(struct sm_media_session *session)
 	spa_list_init(&impl->device_list);
 	spa_device_add_listener(impl->monitor, &impl->listener, &alsa_udev_events, impl);
 
-	if ((str = pw_properties_get(impl->props, "alsa.jack-device")) == NULL ||
+	if ((str = pw_properties_get(impl->props, "alsa.jack-device")) != NULL &&
 	    pw_properties_parse_bool(str)) {
 		if ((res = alsa_start_jack_device(impl)) < 0)
 			goto out_free;