diff --git a/src/Handler/Utils/AvsUpdate.hs b/src/Handler/Utils/AvsUpdate.hs
index 4d37985d9..e328b794d 100644
--- a/src/Handler/Utils/AvsUpdate.hs
+++ b/src/Handler/Utils/AvsUpdate.hs
@@ -65,7 +65,7 @@ instance MkCheckUpdate CU_AvsPersonInfo_User where
   type MCU_Rec CU_AvsPersonInfo_User = User
   type MCU_Raw CU_AvsPersonInfo_User = AvsPersonInfo
   mkCheckUpdate CU_API_UserFirstName             = CheckUpdate     UserFirstName               _avsInfoFirstName
-  mkCheckUpdate CU_API_UserSurname               = CheckUpdate     UserFirstName               _avsInfoLastName
+  mkCheckUpdate CU_API_UserSurname               = CheckUpdate     UserSurname                 _avsInfoLastName
   mkCheckUpdate CU_API_UserDisplayName           = CheckUpdate     UserDisplayName             _avsInfoDisplayName
   mkCheckUpdate CU_API_UserBirthday              = CheckUpdate     UserBirthday                _avsInfoDateOfBirth
   mkCheckUpdate CU_API_UserMobile                = CheckUpdate     UserMobile                  _avsInfoPersonMobilePhoneNo