diff --git a/datatableview/helpers.py b/datatableview/helpers.py
index 0b0a637..f396a23 100644
--- a/datatableview/helpers.py
+++ b/datatableview/helpers.py
@@ -338,11 +338,8 @@ def make_xeditable(instance=None, extra_attrs=[], *args, **kwargs):  # noqa: C90
         # Legacy syntax
         field_name = field_name[1]
         if isinstance(field_name, (tuple, list)):
-            raise ValueError(
-                "'make_xeditable' helper needs a single-field data column," " not {0!r}".format(
-                    field_name
-                )
-            )
+            msg = f"'make_xeditable' helper needs a single-field data column, not {field_name!r}"
+            raise ValueError(msg)
     attrs["data-name"] = field_name
 
     if isinstance(rich_data, Model):