diff --git a/test/test_compressor.py b/test/test_compressor.py
index 1072fb852ba5d8ec718c2c0df25e2ea25b2c175a..47c7f68b74ec45a290fb1b96c95a535438e3a7f5 100644
--- a/test/test_compressor.py
+++ b/test/test_compressor.py
@@ -12,7 +12,6 @@ class CompressorTest(unittest.TestCase):
         """Load a json to use as testdata."""
         with open("soitool/testdata/codebook.json", "r") as file:
             self.soi = json.load(file)
-        file.close()
 
     def test_compress(self):
         """Test compression returns ascii and reduces size."""