diff --git a/tests/test_paths.py b/tests/test_paths.py
index 8761529c6..a4d64659d 100644
--- a/tests/test_paths.py
+++ b/tests/test_paths.py
@@ -26,6 +26,7 @@ def test_addfile_path(self):
                   )
 
     def test_pert_file(self):
+        """Test path of pert file"""
         path, case = os.path.split(self.ieee14)
 
         # --- with pert file ---