diff --git a/src_main/thread/pithread.cpp b/src_main/thread/pithread.cpp
index d7aaa407..23d16ea6 100755
--- a/src_main/thread/pithread.cpp
+++ b/src_main/thread/pithread.cpp
@@ -230,7 +230,7 @@ bool PIThread::start(int timer_delay) {
 	//pthread_attr_setschedparam(&attr, &(PRIVATE->sparam));
 #  endif
 	pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
-	int ret = pthread_create(&PRIVATE->thread, 0, thread_function, this);
+	int ret = pthread_create(&PRIVATE->thread, &attr, thread_function, this);
 	//PICout(PICoutManipulators::DefaultControls) << "pthread_create" << PRIVATE->thread;
 	pthread_attr_destroy(&attr);
 	if (ret == 0) {
@@ -274,7 +274,7 @@ bool PIThread::startOnce() {
 	//pthread_attr_setschedparam(&attr, &(PRIVATE->sparam));
 #  endif
 	pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
-	int ret = pthread_create(&(PRIVATE->thread), 0, thread_function_once, this);
+	int ret = pthread_create(&(PRIVATE->thread), &attr, thread_function_once, this);
 	//PICout(PICoutManipulators::DefaultControls) << "pthread_create" << PRIVATE->thread;
 	pthread_attr_destroy(&attr);
 	if (ret == 0) {