diff --git a/src/libCom/osi/epicsThread.cpp b/src/libCom/osi/epicsThread.cpp
index ed016f47e..a4124c216 100644
--- a/src/libCom/osi/epicsThread.cpp
+++ b/src/libCom/osi/epicsThread.cpp
@@ -109,6 +109,7 @@ extern "C" void epicsThreadCallEntryPoint ( void * pPvt )
         // once the terminated flag is set and we release the lock
         // then the "this" pointer must not be touched again
     }
+    pThread->pWaitReleaseFlag = NULL;
 }
 
 bool epicsThread::beginWait () throw ()