diff --git a/datascience/tables.py b/datascience/tables.py
index 40537fba8..9ea2d8040 100644
--- a/datascience/tables.py
+++ b/datascience/tables.py
@@ -1006,8 +1006,8 @@ def with_columns(self, labels_and_values):
         """Return a table with additional or replaced columns.
 
         Args:
-            ``labels_and_values``: An alternating list of labels and values.
-
+            ``labels_and_values``: An alternating list of labels and values or
+                a list of label-values pairs.
 
         >>> Table().with_columns([
         ...     'letter', ['c', 'd'],