diff --git a/src/osgText/Text.cpp b/src/osgText/Text.cpp
index 5cb69fd88..60b920a95 100644
--- a/src/osgText/Text.cpp
+++ b/src/osgText/Text.cpp
@@ -231,11 +231,18 @@ bool Text::computeBound() const
     
         for(unsigned int i=0;i<_autoTransformCache.size();++i)
         {
-            osg::Matrix& matrix = _autoTransformCache[i]._matrix;
-            _bbox.expandBy(osg::Vec3(_textBB.xMin(),_textBB.yMin(),_textBB.zMin())*matrix);
-            _bbox.expandBy(osg::Vec3(_textBB.xMax(),_textBB.yMin(),_textBB.zMin())*matrix);
-            _bbox.expandBy(osg::Vec3(_textBB.xMax(),_textBB.yMax(),_textBB.zMin())*matrix);
-            _bbox.expandBy(osg::Vec3(_textBB.xMin(),_textBB.yMax(),_textBB.zMin())*matrix);
+            if (_autoTransformCache[i]._traversalNumber<0 && (_characterSizeMode!=OBJECT_COORDS || _autoRotateToScreen))
+            {
+                // _autoTransformCache is not valid so don't take it into accoumt when compute bounding volume.
+            }
+            else
+            {            
+                osg::Matrix& matrix = _autoTransformCache[i]._matrix;
+                _bbox.expandBy(osg::Vec3(_textBB.xMin(),_textBB.yMin(),_textBB.zMin())*matrix);
+                _bbox.expandBy(osg::Vec3(_textBB.xMax(),_textBB.yMin(),_textBB.zMin())*matrix);
+                _bbox.expandBy(osg::Vec3(_textBB.xMax(),_textBB.yMax(),_textBB.zMin())*matrix);
+                _bbox.expandBy(osg::Vec3(_textBB.xMin(),_textBB.yMax(),_textBB.zMin())*matrix);
+            }
         }
     }