diff --git a/crates/polars-core/src/chunked_array/ops/repeat_by.rs b/crates/polars-core/src/chunked_array/ops/repeat_by.rs
index 54be65f3e430b..69e83a042879a 100644
--- a/crates/polars-core/src/chunked_array/ops/repeat_by.rs
+++ b/crates/polars-core/src/chunked_array/ops/repeat_by.rs
@@ -9,7 +9,7 @@ type LargeListArray = ListArray<i64>;
 fn check_lengths(length_srs: usize, length_by: usize) -> PolarsResult<()> {
     polars_ensure!(
        (length_srs == length_by) | (length_by == 1) | (length_srs == 1),
-       ComputeError: "repeaty_by argument and the Series should have equal length, or at least one of them should have length 1. Series length {}, by length {}",
+       ComputeError: "repeat_by argument and the Series should have equal length, or at least one of them should have length 1. Series length {}, by length {}",
        length_srs, length_by
     );
     Ok(())
diff --git a/py-polars/tests/unit/dataframe/test_df.py b/py-polars/tests/unit/dataframe/test_df.py
index e1a00db9ca4ef..1b4e86124e1cc 100644
--- a/py-polars/tests/unit/dataframe/test_df.py
+++ b/py-polars/tests/unit/dataframe/test_df.py
@@ -1692,7 +1692,8 @@ def test_repeat_by_unequal_lengths_panic() -> None:
     )
     with pytest.raises(
         pl.ComputeError,
-        match="""Length of repeat_by argument needs to be 1 or equal to the length of the Series.""",
+        match="repeat_by argument and the Series should have equal length, "
+              "or at least one of them should have length 1",
     ):
         df.select(pl.col("a").repeat_by(pl.Series([2, 2])))