diff --git a/doc/dox/config/pipewire-jack.conf.5.md b/doc/dox/config/pipewire-jack.conf.5.md
index a2e2f6e31..b8a4a5cf0 100644
--- a/doc/dox/config/pipewire-jack.conf.5.md
+++ b/doc/dox/config/pipewire-jack.conf.5.md
@@ -70,7 +70,7 @@ jack.properties = {
     #jack.max-client-ports   = 768
     #jack.fill-aliases       = false
     #jack.writable-input     = false
-
+    #jack.flag-midi2         = false
 }
 ```
 
@@ -198,6 +198,14 @@ from the buffer.
 Set this to true to avoid buffer corruption if you are only dealing with non-buggy clients.
 \endparblock
 
+@PAR@ jack.conf  jack.flag-midi2
+\parblock
+Use the new JACK MIDI2 port flag on MIDI2 (UMP) ports. This is disabled by default because most
+JACK apps don't know about this flag yet and refuse to show the port.
+
+Set this to true for applications that know how to handle MIDI2 ports.
+\endparblock
+
 # MATCH RULES  @IDX@ jack.conf
 
 `jack.rules` provides an `update-props` action that takes an object with properties that are updated
diff --git a/pipewire-jack/src/pipewire-jack.c b/pipewire-jack/src/pipewire-jack.c
index 54dd41975..839a9fc24 100644
--- a/pipewire-jack/src/pipewire-jack.c
+++ b/pipewire-jack/src/pipewire-jack.c
@@ -472,6 +472,7 @@ struct client {
 	unsigned int fill_aliases:1;
 	unsigned int writable_input:1;
 	unsigned int async:1;
+	unsigned int flag_midi2:1;
 
 	uint32_t max_frames;
 	uint32_t max_align;
@@ -3818,7 +3819,7 @@ static void registry_event_global(void *data, uint32_t id,
 		if ((str = spa_dict_lookup(props, PW_KEY_PORT_NAME)) == NULL)
 			goto exit;
 
-		if (type_id == TYPE_ID_UMP)
+		if (type_id == TYPE_ID_UMP && c->flag_midi2)
 			flags |= JackPortIsMIDI2;
 
 		spa_dict_for_each(item, props) {
@@ -4400,6 +4401,7 @@ jack_client_t * jack_client_open (const char *client_name,
 	client->fill_aliases = pw_properties_get_bool(client->props, "jack.fill-aliases", false);
 	client->writable_input = pw_properties_get_bool(client->props, "jack.writable-input", true);
 	client->async = pw_properties_get_bool(client->props, PW_KEY_NODE_ASYNC, false);
+	client->flag_midi2 = pw_properties_get_bool(client->props, "jack.flag-midi2", false);
 
 	client->self_connect_mode = SELF_CONNECT_ALLOW;
 	if ((str = pw_properties_get(client->props, "jack.self-connect-mode")) != NULL) {
diff --git a/src/daemon/jack.conf.in b/src/daemon/jack.conf.in
index b3be1c681..32d8076d7 100644
--- a/src/daemon/jack.conf.in
+++ b/src/daemon/jack.conf.in
@@ -95,6 +95,7 @@ jack.properties = {
      #jack.max-client-ports   = 768
      #jack.fill-aliases       = false
      #jack.writable-input     = true
+     #jack.flag-midi2         = false
 }
 
 # client specific properties