...

diff --git a/coders/png.c b/coders/png.c
index a6746caa1c20eb460561b777dd733118b557d11e..6bea2dbb1663c9f469833212bdabc786341b2ca4 100644 (file)
--- 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.