From 073f821655888e3d3f2e8ad191252233ca835d68 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 24 Dec 2016 15:41:07 -0500
Subject: [PATCH] ...

---
 coders/png.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/coders/png.c b/coders/png.c
index a6746caa1..6bea2dbb1 100644
--- a/coders/png.c
+++ b/coders/png.c
@@ -2996,7 +2996,8 @@ static Image *ReadOnePNGImage(MngInfo *mng_info,
         }
     }
 
-  if (image->storage_class == PseudoClass)
+  if ((image->storage_class == PseudoClass) &&
+      (image_info->ping == MagickFalse))
     {
       /*
         Initialize image colormap.
-- 
2.40.0