diff --git a/include/osg/Geometry b/include/osg/Geometry
index b8a8c4e22..ede7793e4 100644
--- a/include/osg/Geometry
+++ b/include/osg/Geometry
@@ -38,7 +38,7 @@ class SG_EXPORT Geometry : public Drawable
             BIND_PER_VERTEX
         };
                
-        void setVertexArray(Vec3Array* array) { _vertexArray = array; dirtyDisplayList(); }
+        void setVertexArray(Vec3Array* array) { _vertexArray = array; dirtyDisplayList(); dirtyBound(); }
         Vec3Array* getVertexArray() { return _vertexArray.get(); }
         const Vec3Array* getVertexArray() const  { return _vertexArray.get(); }
 
diff --git a/src/osg/GeoSet.cpp b/src/osg/GeoSet.cpp
index 7b53cc5e4..badcc9e4c 100644
--- a/src/osg/GeoSet.cpp
+++ b/src/osg/GeoSet.cpp
@@ -595,7 +595,7 @@ void GeoSet::setCoords( Vec3 *cp )
 {
     _coords = cp;
     _cindex.setToNull();
-    _bbox_computed = false;
+    dirtyBound();
     set_fast_path();
 }
 
@@ -606,7 +606,7 @@ void GeoSet::setCoords( Vec3 *cp, GLushort *ci )
     // note the size of cindex defaults 0, but will be recalculated
     // automatically by computeNumVerts().
     _cindex.set(0,ci);
-    _bbox_computed = false;
+    dirtyBound();
     set_fast_path();
 }
 
@@ -617,7 +617,7 @@ void GeoSet::setCoords( Vec3 *cp, GLuint *ci )
     // note the size of cindex defaults 0, but will be recalculated
     // automatically by computeNumVerts().
     _cindex.set(0,ci);
-    _bbox_computed = false;
+    dirtyBound();
     set_fast_path();
 }
 
@@ -625,7 +625,7 @@ void GeoSet::setCoords( Vec3 *cp, IndexPointer& ip )
 {
     _coords = cp;
     _cindex = ip;
-    _bbox_computed = false;
+    dirtyBound();
     set_fast_path();
 }