diff --git a/elephant/test/test_current_source_density.py b/elephant/test/test_current_source_density.py
index ab35c08b6..b48b2b361 100644
--- a/elephant/test/test_current_source_density.py
+++ b/elephant/test/test_current_source_density.py
@@ -155,7 +155,7 @@ def test_kcsd2d_init(self):
         self.assertEqual(result.sampling_rate, 1000 * pq.Hz)
         self.assertEqual(len(result.times), 1)
 
-        
+
 class GenerateLfpTestCase(unittest.TestCase):
     @classmethod
     def setUpClass(cls) -> None: