diff --git a/map_api.lua b/map_api.lua
index 2e3ec31..3cb96eb 100644
--- a/map_api.lua
+++ b/map_api.lua
@@ -16,8 +16,6 @@ end
 -- scale: The new scale
 function Map.rescale(self, scale)
     if scale >= self.scale then
-        local difference = math.floor(scale / self.scale);
-
         self.fill = {};
         self.markers = {};
         self.scale = scale;