diff --git a/en_US.ISO8859-1/books/porters-handbook/book.sgml b/en_US.ISO8859-1/books/porters-handbook/book.sgml
index 72adc91f13..78f31cd435 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.sgml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.sgml
@@ -6808,7 +6808,7 @@ post-install:
 	  installed at the same time, you can use the whole
 	  <makevar>PKGNAME</makevar>.</para>
 
-	<para>Make the installation dependent to the variable
+	<para>Make the installation dependent on the variable
 	  <makevar>NOPORTDOCS</makevar> so that users can disable it in
 	  <filename>/etc/make.conf</filename>, like this:</para>