diff --git a/common/JackNetAPI.cpp b/common/JackNetAPI.cpp
index e39e7ae1..8fd34be3 100644
--- a/common/JackNetAPI.cpp
+++ b/common/JackNetAPI.cpp
@@ -1,5 +1,5 @@
 /*
-Copyright (C) 2009-2011 Grame
+Copyright (C) 2009-2013 Grame
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
diff --git a/macosx/coremidi/JackCoreMidiDriver.cpp b/macosx/coremidi/JackCoreMidiDriver.cpp
index a23b7ab5..b4ce204c 100644
--- a/macosx/coremidi/JackCoreMidiDriver.cpp
+++ b/macosx/coremidi/JackCoreMidiDriver.cpp
@@ -806,7 +806,7 @@ extern "C" {
 #endif
 
     // singleton kind of driver
-    static Jack::JackDriverClientInterface* driver = NULL;
+    static Jack::JackCoreMidiDriver* driver = NULL;
 
     SERVER_EXPORT jack_driver_desc_t * driver_get_descriptor()
     {
@@ -848,7 +848,7 @@ extern "C" {
         // singleton kind of driver
         if (!driver) {
             driver = new Jack::JackCoreMidiDriver("system_midi", "coremidi", engine, table);
-            if (driver->Open(0, 0, 1, 1, virtual_in, virtual_out, false, "in", "out", 0, 0) == 0) {
+            if (driver->Open(1, 1, virtual_in, virtual_out, false, "in", "out", 0, 0) == 0) {
                 return driver;
             } else {
                 delete driver;