diff --git a/include/osgUtil/RenderStage b/include/osgUtil/RenderStage
index 4c744ed21..3ac5abf62 100644
--- a/include/osgUtil/RenderStage
+++ b/include/osgUtil/RenderStage
@@ -6,6 +6,7 @@
 #define OSGUTIL_RENDERSTAGE 1
 
 #include <osg/ColorMask>
+#include <osg/Viewport>
 
 #include <osgUtil/RenderBin>
 #include <osgUtil/RenderStageLighting>
diff --git a/include/osgUtil/SceneView b/include/osgUtil/SceneView
index f22fbc3d1..d809022f2 100644
--- a/include/osgUtil/SceneView
+++ b/include/osgUtil/SceneView
@@ -125,12 +125,12 @@ class OSGUTIL_EXPORT SceneView : public osg::Referenced
         osg::Camera* getCamera() { return _camera.get(); }
         const osg::Camera* getCamera() const { return _camera.get(); }
 
-        /** set an projection matrix. Note, this will override a camera's projection matrix if it is not NULL.*/
+        /** set a projection matrix. Note, this will override a camera's projection matrix if it is not NULL.*/
         void setProjectionMatrix(osg::Matrix* matrix) { _projectionMatrix = matrix; }
         osg::Matrix* getProjectionMatrix() { return _projectionMatrix.get(); }
         const osg::Matrix* getProjectionMatrix() const { return _projectionMatrix.get(); }
 
-        /** set an modelview matrix. Note, this will override a camera's modelview matrix if it is not NULL.*/
+        /** set a modelview matrix. Note, this will override a camera's modelview matrix if it is not NULL.*/
         void setModelViewMatrix(osg::Matrix* matrix) { _modelviewMatrix = matrix; }
         osg::Matrix* getModelViewMatrix() { return _modelviewMatrix.get(); }
         const osg::Matrix* getModelViewMatrix() const { return _modelviewMatrix.get(); }