diff --git a/chapter08/kernel.xml b/chapter08/kernel.xml
index 838e2ad94..635b67da8 100644
--- a/chapter08/kernel.xml
+++ b/chapter08/kernel.xml
@@ -196,13 +196,6 @@ File systems  --->
     configuration menus and create the kernel configuration from
     scratch.</para>
 
-    <!-- Remove at 4.8.13 -->
-    <para>Fix an out of memory issue that affects recent kernels:</para>
-
-<screen><userinput remap="pre">sed -e '/sk_sndbuf/s/u32/int/' \
-    -e '/sk_rcvbuf/s/u32/int/' \
-    -i.bak net/core/sock.c</userinput></screen>
-
     <para>Compile the kernel image and modules:</para>
 
 <screen><userinput remap="make">make</userinput></screen>