diff --git a/common/JackAPI.cpp b/common/JackAPI.cpp
index 214a0edd..dfa0db56 100644
--- a/common/JackAPI.cpp
+++ b/common/JackAPI.cpp
@@ -130,7 +130,7 @@ extern "C"
             unsigned long buffer_size);
     LIB_EXPORT int jack_port_unregister(jack_client_t *, jack_port_t *);
     LIB_EXPORT void * jack_port_get_buffer(jack_port_t *, jack_nframes_t);
-    LIB_EXPORT jack_uuid_t  jack_port_uuid(const jack_port_t*, jack_uuid_t);
+    LIB_EXPORT jack_uuid_t  jack_port_uuid(const jack_port_t*);
     LIB_EXPORT const char*  jack_port_name(const jack_port_t *port);
     LIB_EXPORT const char*  jack_port_short_name(const jack_port_t *port);
     LIB_EXPORT int jack_port_flags(const jack_port_t *port);
@@ -374,7 +374,7 @@ LIB_EXPORT void* jack_port_get_buffer(jack_port_t* port, jack_nframes_t frames)
     }
 }
 
-LIB_EXPORT jack_uuid_t jack_port_uuid(const jack_port_t*, jack_uuid_t)
+LIB_EXPORT jack_uuid_t jack_port_uuid(const jack_port_t*)
 {
     return 0;
 }
diff --git a/common/jack/jack.h b/common/jack/jack.h
index a4a571fc..86e9ebad 100644
--- a/common/jack/jack.h
+++ b/common/jack/jack.h
@@ -778,7 +778,7 @@ void * jack_port_get_buffer (jack_port_t *port, jack_nframes_t) JACK_OPTIONAL_WE
  *
  * @see jack_uuid_to_string() to convert into a string representation
  */
-jack_uuid_t jack_port_uuid (const jack_port_t *port, jack_uuid_t) JACK_OPTIONAL_WEAK_EXPORT;
+jack_uuid_t jack_port_uuid (const jack_port_t *port) JACK_OPTIONAL_WEAK_EXPORT;
 
 /**
  * @return the full name of the jack_port_t (including the @a