diff --git a/macosx/JackMachSemaphore.cpp b/macosx/JackMachSemaphore.cpp
index 195fb8c8..c786e1a0 100644
--- a/macosx/JackMachSemaphore.cpp
+++ b/macosx/JackMachSemaphore.cpp
@@ -26,8 +26,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 namespace Jack
 {
 
-mach_port_t JackMachSemaphore::fBootPort = 0;
-
 void JackMachSemaphore::BuildName(const char* client_name, const char* server_name, char* res, int size)
 {
     char ext_client_name[JACK_CLIENT_NAME_SIZE + 1];
diff --git a/macosx/JackMachSemaphore.h b/macosx/JackMachSemaphore.h
index f0968126..d3e5fffa 100644
--- a/macosx/JackMachSemaphore.h
+++ b/macosx/JackMachSemaphore.h
@@ -39,7 +39,7 @@ class SERVER_EXPORT JackMachSemaphore : public detail::JackSynchro
     private:
 
         semaphore_t fSemaphore;
-        static mach_port_t fBootPort;
+        mach_port_t fBootPort;
 
     protected:
 
@@ -47,7 +47,7 @@ class SERVER_EXPORT JackMachSemaphore : public detail::JackSynchro
 
     public:
 
-        JackMachSemaphore():JackSynchro(), fSemaphore(0)
+        JackMachSemaphore():JackSynchro(), fSemaphore(0), fBootPort(0)
         {}
 
         bool Signal();