diff --git a/defensive-coding/en-US/Author_Group.xml b/defensive-coding/en-US/Author_Group.xml
index 6b40228..e00d621 100644
--- a/defensive-coding/en-US/Author_Group.xml
+++ b/defensive-coding/en-US/Author_Group.xml
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='utf-8' ?>
 <!DOCTYPE authorgroup PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
-<!ENTITY % BOOK_ENTITIES SYSTEM "UEFI_Secure_Boot_Guide.ent">
+<!ENTITY % BOOK_ENTITIES SYSTEM "Defensive_Coding.ent">
 %BOOK_ENTITIES;
 ]>
 <authorgroup>