diff --git a/narwhals/dataframe.py b/narwhals/dataframe.py
index d004ee69c..758a2561c 100644
--- a/narwhals/dataframe.py
+++ b/narwhals/dataframe.py
@@ -987,7 +987,8 @@ def join(
 
             right_on: Name(s) of the right join column(s).
 
-        Returns: DataFrame
+        Returns:
+            A new joined DataFrame
 
         Examples:
             >>> import polars as pl