diff --git a/tools/utils/credits_git_gen.py b/tools/utils/credits_git_gen.py
index 6a247dcff07..76261a00397 100755
--- a/tools/utils/credits_git_gen.py
+++ b/tools/utils/credits_git_gen.py
@@ -258,7 +258,7 @@ class Credits:
             now = datetime.datetime.now()
             fn = os.path.basename(__file__)
             fh.write(
-                "<p><center><i>Generated by '{:s}' {:d}/{:d}/{:d}</i></center></p>\n".format(
+                "<p><center><i>Generated by '{:s}' {:d}/{:02d}/{:02d}</i></center></p>\n".format(
                     fn, now.year, now.month, now.day,
                 ))