diff --git a/src/libCom/osi/os/posix/osdSem.c b/src/libCom/osi/os/posix/osdSem.c
index 9cf4a2c3b..548c139c1 100644
--- a/src/libCom/osi/os/posix/osdSem.c
+++ b/src/libCom/osi/os/posix/osdSem.c
@@ -187,7 +187,7 @@ semMutexId semMutexCreate(void) {
     status = pthread_condattr_init(&pmutex->condAttr);
     checkStatus(status,"pthread_condattr_init");
     status = pthread_condattr_setpshared(&pmutex->condAttr,
-        _POSIX_THREAD_PROCESS_SHARED);
+        PTHREAD_PROCESS_PRIVATE);
     checkStatus(status,"pthread_condattr_setpshared");
     status = pthread_cond_init(&pmutex->waitToBeOwner,&pmutex->condAttr);
 #else