diff --git a/include/osgAnimation/Animation b/include/osgAnimation/Animation
index 99f1ded1d..7f00b12a4 100644
--- a/include/osgAnimation/Animation
+++ b/include/osgAnimation/Animation
@@ -30,7 +30,10 @@ namespace osgAnimation
     public:
         META_Object(osgAnimation, Animation)
 
-        Animation() : _duration(0), _weight(0), _startTime(0), _playmode(LOOP) {}
+        Animation() :
+            _duration(0.0), _originalDuration(0.0),
+            _weight(0), _startTime(0), _playmode(LOOP) {}
+
         Animation(const osgAnimation::Animation&, const osg::CopyOp&);
 
         enum PlayMode