diff --git a/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.sgml b/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.sgml
index 7f961a7106..1bcb248b51 100644
--- a/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/cutting-edge/chapter.sgml
@@ -1007,6 +1007,12 @@ Script done, &hellip;</screen>
 	can then build a new kernel based on your normal kernel	configuration
 	file.</para>
 
+      <note><para>If kern.securelevel is elevated, then installkernel may fail
+	due to the system immutable flag option.  Because of this, the user
+	may be required to use &man.chflags.1; with with noschg option.  This
+	will allow the install process to overwrite the currently installed
+	kernel.</para></note>
+
       <para>If you are upgrading to &os; 4.0 or above then the old
 	kernel build procedure (as described in <xref linkend="kernelconfig">)
 	is deprecated.  Instead, you should run these commands