From 5344abfe900824c3ded574b82c9136b086a9204e Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 1 Feb 2017 13:25:04 -0500
Subject: [PATCH] ...

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

diff --git a/MagickCore/channel.c b/MagickCore/channel.c
index c46b81255..3c9b65c46 100644
--- a/MagickCore/channel.c
+++ b/MagickCore/channel.c
@@ -358,7 +358,8 @@ MagickExport Image *ChannelFxImage(const Image *image,const char *expression,
             break;
           case AlphaPixelChannel:
           {
-            destination_image->alpha_trait=BlendPixelTrait;
+            if (image->colorspace != UndefinedColorspace)_
+              destination_image->alpha_trait=BlendPixelTrait;
             break;
           }
           case ReadMaskPixelChannel:
-- 
2.40.0