diff --git a/src/libCom/timer/epicsTimer.cpp b/src/libCom/timer/epicsTimer.cpp
index 26300cebf..8cc64eafa 100644
--- a/src/libCom/timer/epicsTimer.cpp
+++ b/src/libCom/timer/epicsTimer.cpp
@@ -39,7 +39,7 @@ epicsTimerNotify::~epicsTimerNotify  () {}
 
 void epicsTimerNotify::show ( unsigned /* level */ ) const {}
 
-epicsTimerForC::epicsTimerForC ( timerQueue &queue, epicsTimerCallback pCBIn, void *pPrivateIn ) :
+epicsTimerForC::epicsTimerForC ( timerQueue &queue, epicsTimerCallback pCBIn, void *pPrivateIn ) throw () :
     timer ( queue ), pCallBack ( pCBIn ), pPrivate ( pPrivateIn )
 {
 }
@@ -70,7 +70,7 @@ epicsTimerQueueActiveForC::~epicsTimerQueueActiveForC ()
 {
 }
 
-void epicsTimerQueueActiveForC::release ()
+void epicsTimerQueueActiveForC::release () throw ()
 {
     epicsSingleton < timerQueueActiveMgr >::reference pMgr = 
         timerQueueMgrEPICS;
diff --git a/src/libCom/timer/timer.cpp b/src/libCom/timer/timer.cpp
index 637b8c4a1..58932fc3b 100644
--- a/src/libCom/timer/timer.cpp
+++ b/src/libCom/timer/timer.cpp
@@ -35,8 +35,8 @@ template class tsFreeList < timer, 0x20 >;
 #   pragma warning ( pop )
 #endif
 
-timer::timer ( timerQueue & queueIn ) :
-    queue ( queueIn ), curState ( stateLimbo ), pNotify ( 0 )
+timer::timer ( timerQueue & queueIn ) throw ():
+    queue ( queueIn ), curState ( stateLimbo ), pNotify ( 0 ) 
 {
 }
 
diff --git a/src/libCom/timer/timerPrivate.h b/src/libCom/timer/timerPrivate.h
index d9cd44c04..bed566e826 100644
--- a/src/libCom/timer/timerPrivate.h
+++ b/src/libCom/timer/timerPrivate.h
@@ -190,7 +190,7 @@ struct epicsTimerQueueActiveForC : public timerQueueActive,
     public tsDLNode < epicsTimerQueueActiveForC > {
 public:
     epicsTimerQueueActiveForC ( bool okToShare, unsigned priority );
-    void release ();
+    void release () throw();
     void * operator new ( size_t );
     void operator delete ( void * );
 protected: