diff -Nru debian-installer-20101020ubuntu318.42/build/util/efi-image debian-installer-20101020ubuntu318.43/build/util/efi-image
--- debian-installer-20101020ubuntu318.42/build/util/efi-image	2016-07-25 16:12:15.000000000 -0400
+++ debian-installer-20101020ubuntu318.43/build/util/efi-image	2018-01-26 07:48:17.000000000 -0500
@@ -118,7 +118,7 @@
 			;;
 	esac
 	if [ "$found" = 1 ]; then
-		cp /usr/lib/shim/shim.efi.signed "$workdir/boot$efi_name.efi"
+		cp "/usr/lib/shim/shim$efi_name.efi.signed" "$workdir/boot$efi_name.efi"
 	fi
 fi
 
diff -Nru debian-installer-20101020ubuntu318.42/debian/changelog debian-installer-20101020ubuntu318.43/debian/changelog
--- debian-installer-20101020ubuntu318.42/debian/changelog	2017-02-28 11:32:13.000000000 -0500
+++ debian-installer-20101020ubuntu318.43/debian/changelog	2018-01-26 07:49:43.000000000 -0500
@@ -1,3 +1,10 @@
+debian-installer (20101020ubuntu318.43) trusty; urgency=medium
+
+  * Include $efi_name in shim filename. (LP: #1743787)
+  * Rebuild to pick up the latest change in preseed. (LP: #1745531)
+
+ -- Eric Desrochers <eric.desrochers@canonical.com>  Fri, 19 Jan 2018 09:20:25 -0500
+
 debian-installer (20101020ubuntu318.42) trusty; urgency=medium
 
   * Drop support for removed keystone kernel (LP: #1623090)