diff --git a/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml b/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml
index acfc9ee326..4efbded6fe 100644
--- a/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml
+++ b/en_US.ISO8859-1/books/porters-handbook/makefiles/chapter.xml
@@ -1800,7 +1800,7 @@ MASTER_SITE_SUBDIR=	stardict/WyabdcRealPeopleTTS/${PORTVERSION}</programlisting>
 	<table xml:id="makefile-master_sites-github-description">
 	  <title><varname>USE_GITHUB</varname> Description</title>
 
-	  <tgroup cols="4">
+	  <tgroup cols="3">
 	    <thead>
 	      <row>
 		<entry>Variable</entry>