diff --git a/cchloader/models/cchfact.py b/cchloader/models/cchfact.py
index f94eb63..93dccaa 100644
--- a/cchloader/models/cchfact.py
+++ b/cchloader/models/cchfact.py
@@ -8,7 +8,7 @@ class CchFactSchema(Schema):
     datetime = fields.DateTime(position=1, format='%Y/%m/%d %H:%M')
     season = fields.Integer(position=2, validate=OneOf([0, 1]))
     ai = fields.Integer(position=3)
-    ao = fields.Integer(position=4, allow_none=True)
+    ae = fields.Integer(position=4, allow_none=True)
     r1 = fields.Integer(position=5, allow_none=True)
     r2 = fields.Integer(position=6, allow_none=True)
     r3 = fields.Integer(position=7, allow_none=True)