diff --git a/include/osg/Matrixf b/include/osg/Matrixf
index 923d6d17d..50c19cbb4 100644
--- a/include/osg/Matrixf
+++ b/include/osg/Matrixf
@@ -230,6 +230,7 @@ class OSG_EXPORT Matrixf
                                       value_type angle3, const Vec3d& axis3);
         inline static Matrixf rotate( const Quat& quat);
         inline static Matrixf inverse( const Matrixf& matrix);
+        inline static Matrixf orthoNormal(const Matrixf& matrix); 
         
         /** Create an orthographic projection matrix.
           * See glOrtho for further details.
@@ -466,6 +467,13 @@ inline Matrixf Matrixf::inverse( const Matrixf& matrix)
     return m;
 }
 
+inline Matrixf Matrixf::orthoNormal(const Matrixf& matrix)
+{
+  Matrixf m;
+  m.orthoNormalize(matrix);
+  return m; 
+}
+
 inline Matrixf Matrixf::ortho(double left, double right,
                             double bottom, double top,
                             double zNear, double zFar)