diff --git a/openupgradelib/openupgrade.py b/openupgradelib/openupgrade.py
index 26dc1ff8..e8dc26af 100644
--- a/openupgradelib/openupgrade.py
+++ b/openupgradelib/openupgrade.py
@@ -2473,12 +2473,18 @@ def convert_field_to_html(
     if translate:
         if version_info[0] < 16:
             do_raise("Translatable fields are only managed in version 16.0 or higher")
-        cr.execute(f"SELECT id, {field_name} FROM {table};")  # pylint: disable=E8103
+        cr.execute("SELECT id, {field_name} FROM {table};").format(
+            field_name=field_name, table=table
+        )  # pylint: disable=E8103
         for row in cr.fetchall():
             record_id, translations = row
             for lang in translations:
                 translations[lang] = plaintext2html(translations[lang])
-            query = f"update {table} set {html_field_name} = %s::jsonb where id = %s"
+            query = (
+                "update {table} set {html_field_name} = %s::jsonb where id = %s".format(
+                    html_field_name=html_field_name, table=table
+                )
+            )
             if verbose:
                 logged_query(cr, query, (json.dumps(translations), record_id))
             else: