From 232c175bd92320100f891d0d9874cf8230a19b1b Mon Sep 17 00:00:00 2001
From: David Schmidt <david.schmiddi.86@gmail.com>
Date: Wed, 5 Feb 2014 12:49:06 +0100
Subject: [PATCH] fixes #513

---
 PIL/PngImagePlugin.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PIL/PngImagePlugin.py b/PIL/PngImagePlugin.py
index a6038d9f2..30fdfb8ac 100644
--- a/PIL/PngImagePlugin.py
+++ b/PIL/PngImagePlugin.py
@@ -505,7 +505,7 @@ def _save(im, fp, filename, chunk=putchunk, check=0):
         else:
             # check palette contents
             if im.palette:
-                colors = len(im.palette.getdata()[1])//3
+                colors = max(len(im.im.getpalette("RGB"))//3, 256)
             else:
                 colors = 256