From b08cbbeb567f759a441fc76165b810156a2de242 Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Mon, 17 Nov 2014 23:23:10 +0000
Subject: [PATCH]

---
 MagickCore/channel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MagickCore/channel.c b/MagickCore/channel.c
index a1b8873d0..6a84194d2 100644
--- a/MagickCore/channel.c
+++ b/MagickCore/channel.c
@@ -1151,6 +1151,7 @@ MagickExport MagickBooleanType SetImageAlphaChannel(Image *image,
     {
       status=CompositeImage(image,image,AlphaCompositeOp,MagickTrue,0,0,
         exception);
+      image->alpha_trait=UndefinedPixelTrait;
       break;
     }
     case OpaqueAlphaChannel:
-- 
2.40.0