Index: head/en_US.ISO8859-1/books/porters-handbook/special/chapter.xml
===================================================================
--- head/en_US.ISO8859-1/books/porters-handbook/special/chapter.xml
+++ head/en_US.ISO8859-1/books/porters-handbook/special/chapter.xml
@@ -659,7 +659,7 @@
 
 	    <row>
 	      <entry><varname>CMAKE_NOCOLOR</varname></entry>
-	      <entry>Disables colour build output.  Default not set,
+	      <entry>Disables color build output.  Default not set,
 		unless <varname>BATCH</varname> or
 		<varname>PACKAGE_BUILDING</varname> are set.</entry>
 	    </row>