diff --git a/cobra/test/test_compartment.py b/cobra/test/test_compartment.py
index b2a02b506..db5869b1c 100644
--- a/cobra/test/test_compartment.py
+++ b/cobra/test/test_compartment.py
@@ -5,6 +5,7 @@
 import pytest
 from cobra.core import Compartment
 
+
 def test__eq__():
     a = b = Compartment("x")
     c = "x"