diff --git a/pandas/tests/io/test_fsspec.py b/pandas/tests/io/test_fsspec.py
index 666da677d702e..f8081a6a69e83 100644
--- a/pandas/tests/io/test_fsspec.py
+++ b/pandas/tests/io/test_fsspec.py
@@ -24,10 +24,7 @@
         "dt": date_range("2018-06-18", periods=2),
     }
 )
-# the ignore on the following line accounts for to_csv returning Optional(str)
-# in general, but always str in the case we give no filename
-# error: Item "None" of "Optional[str]" has no attribute "encode"
-text = df1.to_csv(index=False).encode()  # type: ignore[union-attr]
+text = str(df1.to_csv(index=False)).encode()
 
 
 @pytest.fixture