diff --git a/pandas/io/sql.py b/pandas/io/sql.py
index 437e279e909790..a582d32741ae92 100644
--- a/pandas/io/sql.py
+++ b/pandas/io/sql.py
@@ -404,7 +404,7 @@ def to_sql(frame, name, con, schema=None, if_exists='fail', index=True,
 
     Parameters
     ----------
-    frame : DataFrame
+    frame : DataFrame, Series
     name : string
         Name of SQL table.
     con : SQLAlchemy connectable(engine/connection) or database string URI