diff --git a/src/osgPlugins/bsp/VBSPGeometry.cpp b/src/osgPlugins/bsp/VBSPGeometry.cpp
index 23ccf3305..1273c7e34 100644
--- a/src/osgPlugins/bsp/VBSPGeometry.cpp
+++ b/src/osgPlugins/bsp/VBSPGeometry.cpp
@@ -653,7 +653,7 @@ ref_ptr<Group> VBSPGeometry::createGeometry()
 
         // Now, stripify the geode to convert the POLYGON primitives to
         // triangle strips
-        osgUtil::optimizeMesh(geode);
+        osgUtil::optimizeMesh(geode.get());
     }
 
     // Now do the same for the displacement surfaces (if any)
diff --git a/src/osgPlugins/stl/ReaderWriterSTL.cpp b/src/osgPlugins/stl/ReaderWriterSTL.cpp
index a4cae46fc..d27048ce2 100644
--- a/src/osgPlugins/stl/ReaderWriterSTL.cpp
+++ b/src/osgPlugins/stl/ReaderWriterSTL.cpp
@@ -182,7 +182,7 @@ private:
             geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::TRIANGLES, 0, _numFacets * 3));
 
             if(!_noTriStripPolygons) {
-                osgUtil::optimizeMesh(geom);
+                osgUtil::optimizeMesh(geom.get());
             }
 
             return geom;