diff --git a/tools/pygrub/src/pygrub b/tools/pygrub/src/pygrub
index dcdfc04ff0..541e562327 100755
--- a/tools/pygrub/src/pygrub
+++ b/tools/pygrub/src/pygrub
@@ -731,7 +731,7 @@ class Grub:
 def get_entry_idx(cf, entry):
     # first, see if the given entry is numeric
     try:
-        idx = string.atoi(entry)
+        idx = int(entry)
         return idx
     except ValueError:
         pass