diff --git a/src/libCom/timer/timerQueueActiveMgr.cpp b/src/libCom/timer/timerQueueActiveMgr.cpp
index b710fd7e2..286494938 100644
--- a/src/libCom/timer/timerQueueActiveMgr.cpp
+++ b/src/libCom/timer/timerQueueActiveMgr.cpp
@@ -55,6 +55,7 @@ epicsTimerQueueActiveForC & timerQueueActiveMgr::allocate (
                 iter->timerQueueActiveMgrPrivate::referenceCount++;
                 return *iter;
             }
+            iter++;
         }
     }