diff --git a/gestionatr/input/messages/message_gas.py b/gestionatr/input/messages/message_gas.py
index 1ee1694..0ed9123 100644
--- a/gestionatr/input/messages/message_gas.py
+++ b/gestionatr/input/messages/message_gas.py
@@ -24,6 +24,7 @@
         'A2': 'A202.xsd',
         'A3': 'A302.xsd',
         'A4': 'A402.xsd',
+        'A2S': 'A2S02.xsd',
         'A3S': 'A3S02.xsd',
     },
     '05': {