diff --git a/src/libCom/osi/os/vxWorks/osdThread.c b/src/libCom/osi/os/vxWorks/osdThread.c
index b3f2009c5..36eeaf381 100644
--- a/src/libCom/osi/os/vxWorks/osdThread.c
+++ b/src/libCom/osi/os/vxWorks/osdThread.c
@@ -98,6 +98,7 @@ void threadInit(void)
         threadOnceMutex = semMCreate(
                 SEM_DELETE_SAFE|SEM_INVERSION_SAFE|SEM_Q_PRIORITY);
         assert(threadOnceMutex);
+        TSinit();
     }
     lock = 0;
 }