diff --git a/src_main/thread/pithread.cpp b/src_main/thread/pithread.cpp
index a33d68c9..d5b08090 100755
--- a/src_main/thread/pithread.cpp
+++ b/src_main/thread/pithread.cpp
@@ -221,9 +221,10 @@ bool PIThread::start(int timer_delay) {
 	if (ret == 0) {
 #  ifdef MAC_OS
 		pthread_threadid_np(PRIVATE->thread, (__uint64_t*)&tid_);
-//#  else
-//		pthread_threadid_np();
-//		tid_ = PRIVATE->thread;
+#  else
+#    ifdef FREERTOS
+		tid_ = PRIVATE->thread;
+#    endif
 #  endif
 #else
 	if (PRIVATE->thread != 0) CloseHandle(PRIVATE->thread);
@@ -261,8 +262,10 @@ bool PIThread::startOnce() {
 	if (ret == 0) {
 #  ifdef MAC_OS
 		pthread_threadid_np(PRIVATE->thread, (__uint64_t*)&tid_);
-//#  else
-//		tid_ = PRIVATE->thread;
+#  else
+#    ifdef FREERTOS
+		tid_ = PRIVATE->thread;
+#    endif
 #  endif
 #else
 	if (PRIVATE->thread != 0) CloseHandle(PRIVATE->thread);