From: cristy <urban-warrior@git.imagemagick.org>
Date: Sat, 17 Jan 2015 14:02:04 +0000 (+0000)
Subject: (no commit message)
X-Git-Tag: 7.0.1-0~1431
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e36bf51231f20596708785f816a41d0256873d92;p=imagemagick

---

diff --git a/MagickCore/channel.c b/MagickCore/channel.c
index 5a5c68077..c64b3561c 100644
--- a/MagickCore/channel.c
+++ b/MagickCore/channel.c
@@ -1155,7 +1155,8 @@ MagickExport MagickBooleanType SetImageAlphaChannel(Image *image,
     }
     case OnAlphaChannel:
     {
-      status=SetImageAlpha(image,OpaqueAlpha,exception);
+      if (image->alpha_trait == UndefinedPixelTrait)
+        status=SetImageAlpha(image,OpaqueAlpha,exception);
       image->alpha_trait=BlendPixelTrait;
       break;
     }