diff --git a/Tests/test_file_ico.py b/Tests/test_file_ico.py
index dc5c041b2..3904340f3 100644
--- a/Tests/test_file_ico.py
+++ b/Tests/test_file_ico.py
@@ -61,6 +61,24 @@ class TestFileIco(PillowTestCase):
         # Assert
         self.assertEqual(im_saved.size, (256, 256))
 
+    def test_only_save_relevant_sizes(self):
+        """Issue #2266 https://github.com/python-pillow/Pillow/issues/2266
+        Should save in 16x16, 24x24, 32x32, 48x48 sizes
+        and not in 16x16, 24x24, 32x32, 48x48, 48x48, 48x48, 48x48 sizes
+        """
+        # Arrange
+        im = Image.open("Tests/images/python.ico")  # 16x16, 32x32, 48x48
+        outfile = self.tempfile("temp_saved_python.ico")
+
+        # Act
+        im.save(outfile)
+        im_saved = Image.open(outfile)
+
+        # Assert
+        self.assertEqual(
+            im_saved.info['sizes'],
+            set([(16, 16), (24, 24), (32, 32), (48, 48)]))
+
 
 if __name__ == '__main__':
     unittest.main()