diff --git a/sonic-radiance.love/core/modules/world/world3D.lua b/sonic-radiance.love/core/modules/world/world3D.lua
index 58b364c..555f4a9 100644
--- a/sonic-radiance.love/core/modules/world/world3D.lua
+++ b/sonic-radiance.love/core/modules/world/world3D.lua
@@ -202,6 +202,7 @@ function World3D:zSortItems(items)
     end
 
     local _, aY, aZ, _, aH, aD = self.bodies:getCube(itemA.mainHitbox)
+    local aDepth, aID, aType
     aDepth  = itemA.depth
     aID     = itemA.creationID
     aType   = itemA.type
@@ -210,6 +211,7 @@ function World3D:zSortItems(items)
 
     for _, itemB in ipairs(overlapping) do
       local _, bY, bZ, _, bH, bD = self.bodies:getCube(itemB.mainHitbox)
+      local bDepth, bID, bType
       bDepth = itemB.depth
       bID    = itemB.creationID
       bType  = itemB.type
@@ -246,7 +248,7 @@ function World3D:zSortItems(items)
           elseif aID < bID then
             graph:add(itemB, itemA)
           else
-            err("two object can't have the same ID")
+            error("two object can't have the same ID")
           end
         end
       end