diff --git a/src/osgPlugins/gles/AABBonBoneVisitor b/src/osgPlugins/gles/AABBonBoneVisitor
index b2857c7af..a8f3a7396 100644
--- a/src/osgPlugins/gles/AABBonBoneVisitor
+++ b/src/osgPlugins/gles/AABBonBoneVisitor
@@ -85,8 +85,10 @@ public:
                 osgAnimation::VertexInfluenceMap::iterator itMap = infMap->find((*bone)->getName());
                 if(itMap == infMap->end()) continue;
 
-                osgAnimation::VertexInfluence vxtInf = (*itMap).second;
                 osg::Vec3Array *vertices = dynamic_cast<osg::Vec3Array*>(rigGeometry->getVertexArray());
+                if(!vertices) continue;
+
+                osgAnimation::VertexInfluence vxtInf = (*itMap).second;
 
                 //Expand the boundingBox with each vertex
                 for(unsigned int j = 0; j < vxtInf.size(); j++) {