From 9caea323ba1346834409d18b49ef60ca4b0fa1f6 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Wed, 27 Dec 2017 10:01:37 -0500
Subject: [PATCH] ...

---
 MagickCore/accelerate-kernels-private.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MagickCore/accelerate-kernels-private.h b/MagickCore/accelerate-kernels-private.h
index ac81323cb..3d9dd20cc 100644
--- a/MagickCore/accelerate-kernels-private.h
+++ b/MagickCore/accelerate-kernels-private.h
@@ -484,7 +484,7 @@ OPENCL_ENDIF()
   {
     float intensity;
 
-    if (colorspace == GRAYColorspace)
+    if ((colorspace == GRAYColorspace) || (colorspace == LinearGRAYColorspace))
       return red;
 
     switch (method)
-- 
2.40.0