diff --git a/src/boot.sh b/src/boot.sh
index 1e1bee7..f9e62b3 100644
--- a/src/boot.sh
+++ b/src/boot.sh
@@ -38,14 +38,16 @@ fi
 AAVMF="/usr/share/AAVMF/"
 DEST="$STORAGE/${BOOT_MODE,,}"
 
-if [ ! -f "$DEST.rom" ]; then
-  [ ! -f "$AAVMF/$ROM" ] && error "UEFI boot file ($AAVMF/$ROM) not found!" && exit 44
+if [ ! -s "$DEST.rom" ]; then
+  [ ! -s "$AAVMF/$ROM" ] && error "UEFI boot file ($AAVMF/$ROM) not found!" && exit 44
+  rm -f "$DEST.rom"
   dd if=/dev/zero "of=$DEST.rom" bs=1M count=64 status=none
   dd "if=$AAVMF/$ROM" "of=$DEST.rom" conv=notrunc status=none
 fi
 
-if [ ! -f "$DEST.vars" ]; then
-  [ ! -f "$AAVMF/$VARS" ] && error "UEFI vars file ($AAVMF/$VARS) not found!" && exit 45
+if [ ! -s "$DEST.vars" ]; then
+  [ ! -s "$AAVMF/$VARS" ] && error "UEFI vars file ($AAVMF/$VARS) not found!" && exit 45
+  rm -f "$DEST.vars"
   dd if=/dev/zero "of=$DEST.vars" bs=1M count=64 status=none
   dd "if=$AAVMF/$VARS" "of=$DEST.vars" conv=notrunc status=none
 fi