diff --git a/src/Statement.py b/src/Statement.py
index 3f99a06..7481e1a 100644
--- a/src/Statement.py
+++ b/src/Statement.py
@@ -101,6 +101,8 @@ def _parse_value(value):
         Includes handling of commas and dots for decimal separators and
         digit grouping, such as 1.000,00 and 1,000.00.
 
+        :param value: the statement value as string
+
         :return: parsed value of the statement as float.
         """
         if not value: