diff --git a/noveriablcgen b/noveriablcgen
index 4cfdc40..726c058 100755
--- a/noveriablcgen
+++ b/noveriablcgen
@@ -81,7 +81,14 @@ for arrval in $(find $bedir -mindepth 1 -maxdepth 1 -type d | grep @root | cut -
   bootenvs+=("$arrval")
 done
 
-rm -f $grubdir/*
+# Files, which won't be deleted
+declare keepfiles=("00_header" "30_uefi-firmware")
+for toDelete in $(ls $grubdir); do
+  if echo ${keepfiles[@]} | grep -q $toDelete; then
+    rm -f $grubdir/$toDelete
+  fi
+done
+
 for be in ${bootenvs[@]}; do
   parseTimestampHuman "$be"
   parseTimestamp "$be"