From b99c7a0a8ec87c8e03965fe67da77e15dfa20559 Mon Sep 17 00:00:00 2001
From: Cristy <urban-warrior@imagemagick.org>
Date: Thu, 7 Dec 2017 06:48:30 -0500
Subject: [PATCH] ...

---
 coders/pnm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/coders/pnm.c b/coders/pnm.c
index 3ee13e8c4..7e2e45c74 100644
--- a/coders/pnm.c
+++ b/coders/pnm.c
@@ -1661,7 +1661,7 @@ static MagickBooleanType WritePNMImage(const ImageInfo *image_info,Image *image,
           {
             packet_size=1;
             (void) CopyMagickString(type,"GRAYSCALE",MagickPathExtent);
-            if (IsImageMonochrome(image) != MagickFalse)
+            if (IdentifyImageMonochrome(image,exception) != MagickFalse)
               (void) CopyMagickString(type,"BLACKANDWHITE",MagickPathExtent);
             break;
           }
-- 
2.40.0