diff --git a/Tests/test_file_mic.py b/Tests/test_file_mic.py
index a2be6c126..8724a2983 100644
--- a/Tests/test_file_mic.py
+++ b/Tests/test_file_mic.py
@@ -1,6 +1,6 @@
 from helper import unittest, PillowTestCase, hopper
 
-from PIL import Image, MicImagePlugin
+from PIL import Image, ImagePalette, MicImagePlugin
 
 TEST_FILE = "Tests/images/hopper.mic"
 
@@ -14,8 +14,12 @@ class TestFileMic(PillowTestCase):
         self.assertEqual(im.size, (128, 128))
         self.assertEqual(im.format, "MIC")
 
+        # Adjust for the gamma of 2.2 encoded into the file
+        lut = ImagePalette.make_gamma_lut(1/2.2)
+        im = Image.merge('RGBA', [chan.point(lut) for chan in im.split()])
+
         im2 = hopper("RGBA")
-        self.assert_image_similar(im, im2, 123.5)
+        self.assert_image_similar(im, im2, 10)
 
     def test_n_frames(self):
         im = Image.open(TEST_FILE)