From e5873536f906192187896edfd434ddccebc0846b Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Thu, 28 Sep 2017 08:09:20 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/786

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

diff --git a/coders/icon.c b/coders/icon.c
index 3de0ad3b8..0cd79140b 100644
--- a/coders/icon.c
+++ b/coders/icon.c
@@ -991,7 +991,8 @@ static MagickBooleanType WriteICONImage(const ImageInfo *image_info,
             return(MagickFalse);
           }
         write_info=CloneImageInfo(image_info);
-        (void) CopyMagickString(write_info->filename,"PNG:",MagickPathExtent);
+        (void) CopyMagickString(write_info->magick,"PNG",MagickPathExtent);
+        length=0;
 
         /* Don't write any ancillary chunks except for gAMA */
         (void) SetImageArtifact(write_image,"png:include-chunk","none,gama");
-- 
2.40.0