diff --git a/build-uki.sh b/build-uki.sh
index bfdec7a..7ee2398 100755
--- a/build-uki.sh
+++ b/build-uki.sh
@@ -22,7 +22,7 @@ $sudo objcopy \
 $sudo sbsign --key /etc/secureboot/full/db.key --cert /etc/secureboot/full/db.crt --output $path_to_uki $path_to_uki
 
 # if needed, copy UKI to EFI default boot path
-if [[ -v $set_efi_default_image ]] && [[ $set_efi_default_image = "yes" ]]; then
+if [[ -v set_efi_default_image ]] && [[ $set_efi_default_image = "yes" ]]; then
   $sudo cp $path_to_uki /efi/EFI/BOOT/BOOTX64.EFI
 fi