diff --git a/debian/changelog b/debian/changelog
index 01da23f6..565b58a7 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+livecd-rootfs (2.451) artful; urgency=medium
+
+  * Fix a reference to an undefined variable in the ubuntu-cpc hooks,
+    introduced by the previous upload.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Fri, 25 Aug 2017 14:28:43 -0700
+
 livecd-rootfs (2.450) artful; urgency=medium
 
   [ Steve Langasek ]
diff --git a/live-build/ubuntu-cpc/hooks/033-disk-image-uefi.binary b/live-build/ubuntu-cpc/hooks/033-disk-image-uefi.binary
index 33a19316..83d90442 100755
--- a/live-build/ubuntu-cpc/hooks/033-disk-image-uefi.binary
+++ b/live-build/ubuntu-cpc/hooks/033-disk-image-uefi.binary
@@ -83,8 +83,7 @@ install_grub() {
         --target=${efi_target} \
         --removable \
         --uefi-secure-boot \
-        --no-nvram \
-        --modules="${grub_modules}"
+        --no-nvram
 
     if [ -f mountpoint/boot/efi/EFI/BOOT/grub.cfg ]; then
         sed -i "s| root| root hd0,gpt1|" mountpoint/boot/efi/EFI/BOOT/grub.cfg