From 4c858fc39999cd057e2a5aed77abd110d4da8ad7 Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Sat, 16 Jun 2012 00:43:59 +0000
Subject: [PATCH]

---
 MagickCore/colorspace-private.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/MagickCore/colorspace-private.h b/MagickCore/colorspace-private.h
index d1c5e22f2..0f9339c4c 100644
--- a/MagickCore/colorspace-private.h
+++ b/MagickCore/colorspace-private.h
@@ -25,6 +25,7 @@ extern "C" {
 #include <MagickCore/image.h>
 #include <MagickCore/image-private.h>
 #include <MagickCore/pixel.h>
+#include <MagickCore/pixel-accessor.h>
 
 static inline void ConvertsRGBToCMYK(PixelInfo *pixel)
 {
@@ -41,9 +42,9 @@ static inline void ConvertsRGBToCMYK(PixelInfo *pixel)
       pixel->black=(MagickRealType) QuantumRange;
       return;
     }
-  cyan=(MagickRealType) (1.0-QuantumScale*pixel->red);
-  magenta=(MagickRealType) (1.0-QuantumScale*pixel->green);
-  yellow=(MagickRealType) (1.0-QuantumScale*pixel->blue);
+  cyan=(MagickRealType) (1.0-sRGBDecompanding(QuantumScale*pixel->red));
+  magenta=(MagickRealType) (1.0-sRGBDecompanding(QuantumScale*pixel->green));
+  yellow=(MagickRealType) (1.0-sRGBDecompanding(QuantumScale*pixel->blue));
   black=cyan;
   if (magenta < black)
     black=magenta;
-- 
2.50.1