diff --git a/coders/tiff.c b/coders/tiff.c
index b5fa1d5..1885201 100644
--- a/coders/tiff.c
+++ b/coders/tiff.c
@@ -46,6 +46,7 @@
 #include "magick/cache.h"
 #include "magick/color.h"
 #include "magick/color-private.h"
+#include "magick/colormap.h"
 #include "magick/colorspace.h"
 #include "magick/constitute.h"
 #include "magick/enhance.h"