diff --git a/py-polars/tests/unit/dataframe/test_df.py b/py-polars/tests/unit/dataframe/test_df.py
index 16d4328b9a60..549de1e0c433 100644
--- a/py-polars/tests/unit/dataframe/test_df.py
+++ b/py-polars/tests/unit/dataframe/test_df.py
@@ -1419,6 +1419,18 @@ def test_dot_product() -> None:
     assert isinstance(result, float)
     assert result == 32.0
 
+    with pytest.raises(
+        pl.InvalidOperationError,
+        match="`dot` operation not supported for dtype `bool`"
+    ):
+        pl.Series([True, False, False, True]) @ pl.Series([4, 5, 6, 7])
+
+    with pytest.raises(
+        pl.InvalidOperationError,
+        match="`dot` operation not supported for dtype `str`"
+    ):
+        pl.Series([1, 2, 3, 4]) @ pl.Series(["True", "False", "False", "True"])
+
 
 def test_hash_rows() -> None:
     df = pl.DataFrame({"a": [1, 2, 3, 4], "b": [2, 2, 2, 2]})