diff --git a/src/XrdSys/XrdSysIOEvents.cc b/src/XrdSys/XrdSysIOEvents.cc
index 0c0e6b29f77..9654ba9b508 100644
--- a/src/XrdSys/XrdSysIOEvents.cc
+++ b/src/XrdSys/XrdSysIOEvents.cc
@@ -593,8 +593,9 @@ void XrdSys::IOEvents::Poller::CbkTMO()
 //
    toMutex.Lock();
    while((cP = tmoBase) && cP->deadLine <= time(0))
-        {toMutex.UnLock();
-         CbkXeq(cP, cP->dlType, 0, 0);
+        {int dlType = cP->dlType;
+         toMutex.UnLock();
+         CbkXeq(cP, dlType, 0, 0);
          toMutex.Lock();
         }
    toMutex.UnLock();