diff --git a/ZCppMain/ZCProcess_Linux.H b/ZCppMain/ZCProcess_Linux.H
index 1287311..dc403fe 100644
--- a/ZCppMain/ZCProcess_Linux.H
+++ b/ZCppMain/ZCProcess_Linux.H
@@ -3457,6 +3457,8 @@ namespace ZNsMain
         ZtCThread(TTypeBase& AR_CBaseType):TTypeBase(AR_CBaseType)
         {
             _DEBUG_REENTRANT_CHECK_
+
+            mh_ThreadID = 0 ;
         }
         ZtCThread(const ZtCThread& rhs):TTypeBase(rhs)
         {
@@ -3469,6 +3471,8 @@ namespace ZNsMain
         ZtCThread(const TTypeArg& AR_TTypeArg):TTypeBase(AR_TTypeArg)
         {
             _DEBUG_REENTRANT_CHECK_
+
+            mh_ThreadID = 0 ;
         }
         ZtCThread& operator=(const ZtCThread& rhs)
         {