diff --git a/vcg/space/box3.h b/vcg/space/box3.h
index 3bd1928e..81717931 100644
--- a/vcg/space/box3.h
+++ b/vcg/space/box3.h
@@ -52,7 +52,7 @@ public:
         /// The bounding box constructor
     inline  Box3() { this->SetNull(); }
         /// Copy constructor
-    inline  Box3( const Box3 & b ) { min=b.min; max=b.max; }
+    //inline  Box3( const Box3 & b ) { min=b.min; max=b.max; }
         /// Min Max constructor
     inline  Box3( const Point3<BoxScalarType> & mi, const Point3<BoxScalarType> & ma ) { min = mi; max = ma; }
     /// Point Radius Constructor
diff --git a/wrap/gui/trackball.h b/wrap/gui/trackball.h
index fc70a36a..9d3a87f2 100644
--- a/wrap/gui/trackball.h
+++ b/wrap/gui/trackball.h
@@ -202,7 +202,7 @@ public:
 	
 	private:
 	// Trackball must not be copied. Use Append (see vcg/complex/trimesh/append.h)
-	Trackball operator =(const Trackball &  /*m*/){ assert(0); return *this; }
+	Trackball operator =(const Trackball &  /*m*/) = delete;
 	public:
   /*!
     @brief Reset the trackball.