diff --git a/chapter06/glibc-inst.xml b/chapter06/glibc-inst.xml
index 7458748ab..8fd25bf08 100644
--- a/chapter06/glibc-inst.xml
+++ b/chapter06/glibc-inst.xml
@@ -16,6 +16,10 @@ Install Glibc by running the following commands:
 	<userinput>touch /etc/ld.so.conf &amp;&amp;</userinput>
 	<userinput>mkdir /usr/src/glibc-build &amp;&amp;</userinput>
 	<userinput>cd /usr/src/glibc-build &amp;&amp;</userinput>
+	<userinput>sed -e 's|$(PERL)|/usr/bin/perl|' \</userinput>
+	<userinput>&nbsp;&nbsp;&nbsp;../glibc-2.2.1/malloc/Makefile > tmp~
+		&amp;&amp;</userinput>
+	<userinput>mv tmp~ ../glibc-2.2.1/malloc/Makefile &amp;&amp;</userinput>
 	<userinput>../glibc-2.2.1/configure \</userinput>
 	<userinput>&nbsp;&nbsp;&nbsp;--prefix=/usr --enable-add-ons 
 		\</userinput>