diff --git a/components/nifosg/controller.hpp b/components/nifosg/controller.hpp
index 58870317e..d0c6d1de3 100644
--- a/components/nifosg/controller.hpp
+++ b/components/nifosg/controller.hpp
@@ -146,7 +146,7 @@ namespace NifOsg
     {
     public:
         UVController();
-        UVController(const UVController&,const osg::CopyOp& = osg::CopyOp::SHALLOW_COPY);
+        UVController(const UVController&,const osg::CopyOp&);
         UVController(const Nif::NiUVData *data, std::set<int> textureUnits);
 
         META_Object(NifOsg,UVController)
diff --git a/components/nifosg/particle.hpp b/components/nifosg/particle.hpp
index c7d5d585d..043489865 100644
--- a/components/nifosg/particle.hpp
+++ b/components/nifosg/particle.hpp
@@ -60,7 +60,7 @@ namespace NifOsg
         InverseWorldMatrix()
         {
         }
-        InverseWorldMatrix(const InverseWorldMatrix& copy, const osg::CopyOp& op = osg::CopyOp::SHALLOW_COPY)
+        InverseWorldMatrix(const InverseWorldMatrix& copy, const osg::CopyOp& op)
             : osg::Object(), osg::NodeCallback()
         {
         }
diff --git a/components/sceneutil/lightmanager.hpp b/components/sceneutil/lightmanager.hpp
index e62dc00e5..bcdcdf7dc 100644
--- a/components/sceneutil/lightmanager.hpp
+++ b/components/sceneutil/lightmanager.hpp
@@ -121,7 +121,7 @@ namespace SceneUtil
             : mLightManager(NULL)
             , mLastFrameNumber(0)
         {}
-        LightListCallback(const LightListCallback& copy, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY)
+        LightListCallback(const LightListCallback& copy, const osg::CopyOp& copyop)
             : osg::Object(copy, copyop), osg::NodeCallback(copy, copyop)
             , mLightManager(copy.mLightManager)
             , mLastFrameNumber(0)