1 files changed, 1 insertions, 1 deletions

diff --git a/configs/releng/build.sh b/configs/releng/build.sh
index 5590163..86cdb08 100755
--- a/configs/releng/build.sh
+++ b/configs/releng/build.sh
@@ -190,7 +190,7 @@ make_efiboot() {
     cp ${work_dir}/iso/EFI/shellx64_v2.efi ${work_dir}/efiboot/EFI/
     cp ${work_dir}/iso/EFI/shellx64_v1.efi ${work_dir}/efiboot/EFI/
 
-    umount ${work_dir}/efiboot
+    umount -d ${work_dir}/efiboot
 }
 
 # Build airootfs filesystem image