From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 1 Feb 2017 18:25:04 +0000 (-0500)
Subject: ...
X-Git-Tag: 7.0.4-7~22
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=5344abfe900824c3ded574b82c9136b086a9204e;p=imagemagick

...
---

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: