diff --git a/en_US.ISO8859-1/books/porters-handbook/book.xml b/en_US.ISO8859-1/books/porters-handbook/book.xml
index 63aa6d0536..32d9bb94cf 100644
--- a/en_US.ISO8859-1/books/porters-handbook/book.xml
+++ b/en_US.ISO8859-1/books/porters-handbook/book.xml
@@ -4782,12 +4782,16 @@ CMAKE_ARGS+=	-DTEST:BOOL=false
 	    <para><makevar>CFLAGS</makevar></para>
 	  </listitem>
 
+	  <listitem>
+	    <para><makevar>CPPFLAGS</makevar></para>
+	  </listitem>
+
 	  <listitem>
 	    <para><makevar>CXXFLAGS</makevar></para>
 	  </listitem>
 
 	  <listitem>
-	    <para><makevar>LDLAGS</makevar></para>
+	    <para><makevar>LDFLAGS</makevar></para>
 	  </listitem>
 
 	  <listitem>