diff --git a/python/cudf/cudf/core/dataframe.py b/python/cudf/cudf/core/dataframe.py
index 1dddcb9e3af..a444d87b50c 100644
--- a/python/cudf/cudf/core/dataframe.py
+++ b/python/cudf/cudf/core/dataframe.py
@@ -6519,7 +6519,7 @@ def _get_union_of_series_names(series_list):
         else:
             names_list.append(series.name)
     if unnamed_count == len(series_list):
-        names_list = [*range(len(series_list))]
+        names_list = range(len(series_list))
 
     return names_list
 
diff --git a/python/cudf/cudf/tests/test_dataframe.py b/python/cudf/cudf/tests/test_dataframe.py
index 61c3f428019..3e359335719 100644
--- a/python/cudf/cudf/tests/test_dataframe.py
+++ b/python/cudf/cudf/tests/test_dataframe.py
@@ -7665,9 +7665,14 @@ def test_dataframe_init_from_series_list(data, ignore_dtype, columns):
     actual = cudf.DataFrame(gd_data, columns=columns)
 
     if ignore_dtype:
-        assert_eq(expected.fillna(-1), actual.fillna(-1), check_dtype=False)
+        assert_eq(
+            expected.fillna(-1),
+            actual.fillna(-1),
+            check_dtype=False,
+            check_index_type=True,
+        )
     else:
-        assert_eq(expected, actual)
+        assert_eq(expected, actual, check_index_type=True)
 
 
 @pytest.mark.parametrize(
diff --git a/python/dask_cudf/dask_cudf/tests/test_groupby.py b/python/dask_cudf/dask_cudf/tests/test_groupby.py
index fce9b773dac..274c6670426 100644
--- a/python/dask_cudf/dask_cudf/tests/test_groupby.py
+++ b/python/dask_cudf/dask_cudf/tests/test_groupby.py
@@ -17,6 +17,7 @@
 @pytest.mark.parametrize("aggregation", SUPPORTED_AGGS)
 @pytest.mark.parametrize("series", [False, True])
 def test_groupby_basic(series, aggregation):
+    np.random.seed(0)
     pdf = pd.DataFrame(
         {
             "x": np.random.randint(0, 5, size=10000),