From b489b653a7948b49966994099f3a6ebfb3c8124b Mon Sep 17 00:00:00 2001
From: Dirk Lemstra <dirk@lemstra.org>
Date: Fri, 5 Oct 2018 23:50:38 +0200
Subject: [PATCH] Corrected patch

---
 MagickCore/image.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/MagickCore/image.c b/MagickCore/image.c
index a5c58c1da..5ec2250dc 100644
--- a/MagickCore/image.c
+++ b/MagickCore/image.c
@@ -3220,17 +3220,17 @@ MagickExport MagickBooleanType SetImageMask(Image *image,const PixelMask type,
   {
     case ReadPixelMask:
     {
-      image->channels=(ChannelType) (image->channels | ~ReadMaskChannel);
+      image->channels=(ChannelType) (image->channels | ReadMaskChannel);
       break;
     }
     case WritePixelMask:
     {
-      image->channels=(ChannelType) (image->channels | ~WriteMaskChannel);
+      image->channels=(ChannelType) (image->channels | WriteMaskChannel);
       break;
     }
     default:
     {
-      image->channels=(ChannelType) (image->channels | ~CompositeMaskChannel);
+      image->channels=(ChannelType) (image->channels | CompositeMaskChannel);
       break;
     }
   }
-- 
2.40.0