diff --git a/invesalius/constants.py b/invesalius/constants.py
index 99bf168..6f68d9b 100644
--- a/invesalius/constants.py
+++ b/invesalius/constants.py
@@ -153,3 +153,5 @@ RAYCASTING_TYPES = [filename.split(".")[0] for filename in
                     os.listdir(folder) if
                     os.path.isfile(os.path.join(folder,filename))] 
 RAYCASTING_TYPES.sort()
+RAYCASTING_LABEL =  "Skin On Blue"
+
diff --git a/invesalius/data/volume.py b/invesalius/data/volume.py
index f977063..330826f 100755
--- a/invesalius/data/volume.py
+++ b/invesalius/data/volume.py
@@ -23,7 +23,7 @@ import vtk
 import wx
 import wx.lib.pubsub as ps
 
-import constants
+import constants as const
 from project import Project
 
 Kernels = { 
@@ -96,7 +96,7 @@ class Volume():
     def LoadConfig(self, label):
         print label
         if not label:
-            label = "Skin On Blue"
+            label = const.RAYCASTING_LABEL
 
         path = os.path.join("..", "presets", "raycasting",
                              label+".plist")
diff --git a/invesalius/gui/default_viewers.py b/invesalius/gui/default_viewers.py
index 8ce761e..2625109 100755
--- a/invesalius/gui/default_viewers.py
+++ b/invesalius/gui/default_viewers.py
@@ -210,8 +210,10 @@ class VolumeToolPanel(wx.Panel):
         menu = wx.Menu()
         for name in const.RAYCASTING_TYPES:
             id = wx.NewId()
-            item = wx.MenuItem(menu, id, name)
+            item = wx.MenuItem(menu, id, name, kind=wx.ITEM_RADIO)
             menu.AppendItem(item)
+            if name == const.RAYCASTING_LABEL:
+                item.Check(1)
             ID_TO_NAME[id] = name
         self.menu_raycasting = menu
         menu.Bind(wx.EVT_MENU, self.OnMenuRaycasting)    
--
libgit2 0.21.2