diff --git a/dask/dataframe/tests/test_groupby.py b/dask/dataframe/tests/test_groupby.py
index 5e8299838fc..03fb1d3ca8a 100644
--- a/dask/dataframe/tests/test_groupby.py
+++ b/dask/dataframe/tests/test_groupby.py
@@ -1841,10 +1841,7 @@ def test_std_object_dtype(func):
 def test_std_columns_int():
     df = pd.DataFrame({0: [5], 1: [5]})
     ddf = dd.from_pandas(df, npartitions=2)
-    if PANDAS_GE_300:
-        assert_eq(ddf.groupby(ddf[0]).std(), df.groupby(df[0]).std())
-    else:
-        assert_eq(ddf.groupby(ddf[0]).std(), df.groupby(df[0].copy()).std())
+    assert_eq(ddf.groupby(ddf[0]).std(), df.groupby(df[0]).std())
 
 
 def test_timeseries():