diff --git a/modules/transilien/pages.py b/modules/transilien/pages.py
index edf1352a..8e833a62 100644
--- a/modules/transilien/pages.py
+++ b/modules/transilien/pages.py
@@ -40,7 +40,7 @@ class DictElement(ListElement):
 
 
 class RoadMapDuration(Duration):
-    regexp = re.compile(r'(?P<mn>\d+)')
+    _regexp = re.compile(r'(?P<mn>\d?)')
     kwargs = {'minutes': 'mn'}