diff --git a/scripts/lib/wic/canned-wks/efi-bootdisk.wks.in b/scripts/lib/wic/canned-wks/efi-bootdisk.wks.in
index 2fd286ff98..5211972955 100644
--- a/scripts/lib/wic/canned-wks/efi-bootdisk.wks.in
+++ b/scripts/lib/wic/canned-wks/efi-bootdisk.wks.in
@@ -1,3 +1,3 @@
 bootloader --ptable gpt
-part /boot --source rootfs --rootfs-dir=${IMAGE_ROOTFS}/boot --fstype=vfat --label boot --active --align 1024 --use-uuid --overhead-factor 1.1
+part /boot --source rootfs --rootfs-dir=${IMAGE_ROOTFS}/boot --fstype=vfat --label boot --active --align 1024 --use-uuid --overhead-factor 1.2
 part / --source rootfs --fstype=ext4 --label root --align 1024 --exclude-path boot/