diff --git a/python/samba/functional_level.py b/python/samba/functional_level.py
index 3746516b49b..e5ccf3988fb 100644
--- a/python/samba/functional_level.py
+++ b/python/samba/functional_level.py
@@ -71,7 +71,7 @@ def dc_level_from_lp(lp):
     if smb_conf_dc_functional_level is None:
         # This shouldn't be possible, except if the default option
         # value is not in the loadparm enum table
-        raise RuntimeError(f"'ad dc functional level' in smb.conf unrecognised!")
+        raise RuntimeError("'ad dc functional level' in smb.conf unrecognised!")
 
     try:
         return string_to_level(smb_conf_dc_functional_level)
diff --git a/python/samba/netcmd/delegation.py b/python/samba/netcmd/delegation.py
index 35a91aca458..840be2088a3 100644
--- a/python/samba/netcmd/delegation.py
+++ b/python/samba/netcmd/delegation.py
@@ -128,8 +128,8 @@ class cmd_delegation_show(Command):
 
             if not ignore:
                 if first:
-                    self.outf.write(f'  Principals that may delegate to this '
-                                    f'account:\n')
+                    self.outf.write('  Principals that may delegate to this '
+                                    'account:\n')
                     first = False
 
                 self.outf.write(f'msDS-AllowedToActOnBehalfOfOtherIdentity: '