diff --git a/src/WCSimEventAction.cc b/src/WCSimEventAction.cc
index 268dee830..883d79b8c 100644
--- a/src/WCSimEventAction.cc
+++ b/src/WCSimEventAction.cc
@@ -63,6 +63,7 @@ WCSimEventAction::WCSimEventAction(WCSimRunAction* myRun,
 				   WCSimPrimaryGeneratorAction* myGenerator)
   :runAction(myRun), generatorAction(myGenerator), 
    detectorConstructor(myDetector),
+   RelativeHitTime(false),
    ConstructedDAQClasses(false),
    SavedOptions(false)
 {