diff --git a/src/power.sh b/src/power.sh
index 7935e67..ac66e6d 100644
--- a/src/power.sh
+++ b/src/power.sh
@@ -121,7 +121,7 @@ _graceful_shutdown() {
       info "Cannot send ACPI signal during Windows setup, aborting..."
       finish "$code" && return "$code"
     else
-      rm -f "$STORAGE/$BASE"
+      [ -n "$BASE" ] && rm -f "$STORAGE/$BASE"
       touch "$STORAGE/windows.boot"
     fi
   fi