diff --git a/gamecore/modules/world/actors/utils/boxes/parent.lua b/gamecore/modules/world/actors/utils/boxes/parent.lua
index 314cbab..45c570b 100644
--- a/gamecore/modules/world/actors/utils/boxes/parent.lua
+++ b/gamecore/modules/world/actors/utils/boxes/parent.lua
@@ -37,7 +37,11 @@ function Box3D:new(owner, w, h, d, isVisible)
   self.shadowSources = {}
   self.needRedraw = false
 
-  self.isVisible  = isVisible or true
+  if (isVisible == nil) then
+    self.isVisible  = true
+  else
+    self.isVisible  = isVisible
+  end
 
   if (self.isVisible) then
     self:setTexture()