diff --git a/tests/test_import_data.py b/tests/test_import_data.py
index 03dda51b..c024661d 100644
--- a/tests/test_import_data.py
+++ b/tests/test_import_data.py
@@ -19,8 +19,8 @@ def test_attachment_ftp_to_nowhere():
 
 
 def convert_to_path_with_tilde(string_path):
-    '''Helper function that introduces ~ in a valid path,
-       somehow the inverse of pathlib.Path.expanduser()'''
+    """Somehow the inverse of pathlib.Path.expanduser(). Helper function used
+    to generate valid paths containing ~ """
     path = pp.Path(string_path)
     absolute_path = path.resolve()
     home = absolute_path.home()