diff --git a/py-polars/polars/dataframe/frame.py b/py-polars/polars/dataframe/frame.py
index 8a550f9e5904..950aebc4331f 100644
--- a/py-polars/polars/dataframe/frame.py
+++ b/py-polars/polars/dataframe/frame.py
@@ -6326,7 +6326,7 @@ def group_by_dynamic(
         │ 2021-12-16 03:00:00 ┆ 6   │
         └─────────────────────┴─────┘
 
-        Group by windows of 1 hour starting at 2021-12-16 00:00:00.
+        Group by windows of 1 hour.
 
         >>> df.group_by_dynamic("time", every="1h", closed="right").agg(pl.col("n"))
         shape: (4, 2)
diff --git a/py-polars/polars/lazyframe/frame.py b/py-polars/polars/lazyframe/frame.py
index ff4ab963faaf..dead2681da0b 100644
--- a/py-polars/polars/lazyframe/frame.py
+++ b/py-polars/polars/lazyframe/frame.py
@@ -3823,7 +3823,7 @@ def group_by_dynamic(
         │ 2021-12-16 03:00:00 ┆ 6   │
         └─────────────────────┴─────┘
 
-        Group by windows of 1 hour starting at 2021-12-16 00:00:00.
+        Group by windows of 1 hour.
 
         >>> lf.group_by_dynamic("time", every="1h", closed="right").agg(
         ...     pl.col("n")