diff --git a/scripts/brush.lua b/scripts/brush.lua
index 9f581d407..a1b6e98a4 100644
--- a/scripts/brush.lua
+++ b/scripts/brush.lua
@@ -17,7 +17,7 @@ do
   local c = Brush(4)
   assert(c.type == BrushType.CIRCLE)
   assert(c.size == 4)
-  assert(c.center == Point{ x=2, y=2 })
+  assert(c.center == Point{ x=1, y=1 })
 end
 
 do