diff --git a/biobb_dna/test/unitests/test_correlation/test_correlation.py b/biobb_dna/test/unitests/test_correlation/test_correlation.py
index efbea423..a0aa5c30 100644
--- a/biobb_dna/test/unitests/test_correlation/test_correlation.py
+++ b/biobb_dna/test/unitests/test_correlation/test_correlation.py
@@ -50,6 +50,7 @@ def setup_class(self):
 
     def teardown_class(self):
         fx.test_teardown(self)
+        # pass
 
     def test_basepaircorrelation(self):
         returncode = interbpcorr(