diff --git a/modules/gfx/pymod/export_render_options.cc b/modules/gfx/pymod/export_render_options.cc
index e3f46ea4d062ef1836798911426ba066b97dcc56..b1dbebcc3227e494196d11dcb69230d962406c37 100644
--- a/modules/gfx/pymod/export_render_options.cc
+++ b/modules/gfx/pymod/export_render_options.cc
@@ -105,9 +105,11 @@ void export_RenderOptions()
     .def("SetSphereRad", &CustomRenderOptions::SetSphereRad)
     .def("GetSphereRad", &CustomRenderOptions::GetSphereRad)
     .add_property("sphere_rad", &CustomRenderOptions::GetSphereRad, &CustomRenderOptions::SetSphereRad)    
+    .add_property("sphere_radius", &CustomRenderOptions::GetSphereRad, &CustomRenderOptions::SetSphereRad)    
     .def("SetBondRad", &CustomRenderOptions::SetBondRad)
     .def("GetBondRad", &CustomRenderOptions::GetBondRad)
     .add_property("bond_rad", &CustomRenderOptions::GetBondRad, &CustomRenderOptions::SetBondRad)
+    .add_property("bond_radius", &CustomRenderOptions::GetBondRad, &CustomRenderOptions::SetBondRad)
   ;
 
   class_<CartoonRenderOptions, boost::shared_ptr<CartoonRenderOptions>, bases<RenderOptions>, boost::noncopyable>("CartoonRenderOptions")
diff --git a/modules/gui/pymod/scene/custom_widget.py b/modules/gui/pymod/scene/custom_widget.py
index bbbbd5189ef0567d6fa368b35bcfadbf9922fe7d..7a7eb2e9283042f1ae8145870fc417b42e76cd3e 100644
--- a/modules/gui/pymod/scene/custom_widget.py
+++ b/modules/gui/pymod/scene/custom_widget.py
@@ -39,8 +39,8 @@ class CustomWidget(RenderModeWidget):
     max_arc_detail = 20
     
     min_rad = 0.05
-    max_bond_rad = 0.5
-    max_sphere_rad = 1
+    max_bond_rad = 1.0
+    max_sphere_rad = 1.0