diff --git a/py/server/tests/test_parquet.py b/py/server/tests/test_parquet.py
index 417b24353d0..89d13ad0582 100644
--- a/py/server/tests/test_parquet.py
+++ b/py/server/tests/test_parquet.py
@@ -286,7 +286,7 @@ def round_trip_with_compression(self, compression_codec_name, dh_table, vector_c
 
         # Write the pandas dataframe back to parquet (via pyarraow) and read it back using deephaven.parquet to compare
         dataframe.to_parquet('data_from_pandas.parquet',
-                             compression=None if compression_codec_name is 'UNCOMPRESSED' else compression_codec_name)
+                             compression=None if compression_codec_name == 'UNCOMPRESSED' else compression_codec_name)
         result_table = read('data_from_pandas.parquet')
         self.assert_table_equals(dh_table, result_table)