diff --git a/src/thread/pithread.cpp b/src/thread/pithread.cpp
index 90ee03a8..428762f6 100755
--- a/src/thread/pithread.cpp
+++ b/src/thread/pithread.cpp
@@ -328,7 +328,7 @@ void PIThread::setPriority(PIThread::Priority prior) {
 			__sched_priority
 #  endif
 							= priority2System(priority_);
-	pthread_setschedparam(thread, policy_, &sparam);
+	pthread_setschedparam(pthread_self(), policy_, &sparam);
 #else
 	if (!running_ && (thread != 0)) return;
 	SetThreadPriority(thread, priority2System(priority_));