diff --git a/PIL/IcoImagePlugin.py b/PIL/IcoImagePlugin.py
index b4817db27..c4e24d99c 100644
--- a/PIL/IcoImagePlugin.py
+++ b/PIL/IcoImagePlugin.py
@@ -48,7 +48,6 @@ def _save(im, fp, filename):
     width, height = im.size
     filter(lambda x: False if (x[0] > width or x[1] > height or
                                x[0] > 255 or x[1] > 255) else True, sizes)
-    sizes = sorted(sizes, key=lambda x: x[0])
     fp.write(struct.pack("H", len(sizes)))  # idCount(2)
     offset = fp.tell() + len(sizes)*16
     for size in sizes: