diff -r d3cb8720f17e Lib/imghdr.py
--- a/Lib/imghdr.py	Tue Nov 20 16:13:54 2012 +0200
+++ b/Lib/imghdr.py	Tue Nov 20 18:12:40 2012 +0100
@@ -35,8 +35,9 @@
 tests = []
 
 def test_jpeg(h, f):
-    """JPEG data in JFIF or Exif format"""
-    if h[6:10] in (b'JFIF', b'Exif'):
+    """JPEG data in JFIF or Exif format. Supports an ICC profile if it's present"""
+    if h[6:10] in (b'JFIF', b'Exif') or
+       (h[2:4] == b'\xFF\xE2' and h[6:17] == b'ICC_PROFILE'):
         return 'jpeg'
 
 tests.append(test_jpeg)