diff --git a/Foundation/src/Thread_POSIX.cpp b/Foundation/src/Thread_POSIX.cpp
index 5b91c2071..4f96b5d3a 100644
--- a/Foundation/src/Thread_POSIX.cpp
+++ b/Foundation/src/Thread_POSIX.cpp
@@ -121,6 +121,7 @@ void ThreadImpl::setPriorityImpl(int prio)
 	if (prio != _pData->prio)
 	{
 		_pData->prio = prio;
+		_pData->policy = SCHED_OTHER;
 		if (isRunningImpl())
 		{
 			struct sched_param par;
@@ -132,7 +133,7 @@ void ThreadImpl::setPriorityImpl(int prio)
 }
 
 
-void ThreadImpl::setOSPriorityImpl(int prio, int policy )
+void ThreadImpl::setOSPriorityImpl(int prio, int policy)
 {
 	if (prio != _pData->osPrio || policy != _pData->policy)
 	{
@@ -236,7 +237,7 @@ void ThreadImpl::startImpl(Runnable& target)
 	else
 	{
 		struct sched_param par;
-		par.sched_priority = mapPrio(_pData->prio, _pData->policy);
+		par.sched_priority = _pData->osPrio;
 		if (pthread_setschedparam(_pData->thread, _pData->policy, &par))
 			throw SystemException("cannot set thread priority");
 	}