diff --git a/modules/bouygues/browser.py b/modules/bouygues/browser.py
index f1d644810937c0f0bfe861100b9e43a2eede4859..f469a38639ce7df5b2d25a9b934f46291201a6ed 100644
--- a/modules/bouygues/browser.py
+++ b/modules/bouygues/browser.py
@@ -59,7 +59,7 @@ def __init__(self, username, password, lastname, *args, **kwargs):
 
     def do_login(self):
         self.login_page.go()
-        self.page.login(self.username, self.password)
+        self.page.login(self.username, self.password, self.lastname)
 
         # q is timestamp millisecond
         self.app_config.go(params={'q': int(time()*1000)})
diff --git a/modules/bouygues/pages.py b/modules/bouygues/pages.py
index 5bd2013f0911b79331643100d036bd300461d01b..d748b293525ca2ae7e0c5b82b6cb537b7ca1ab69 100644
--- a/modules/bouygues/pages.py
+++ b/modules/bouygues/pages.py
@@ -28,13 +28,20 @@
 from weboob.capabilities import NotAvailable
 from weboob.capabilities.bill import Subscription, Bill
 from weboob.browser.filters.standard import Date, CleanDecimal, Env, Format
+from weboob.exceptions import BrowserIncorrectPassword
 
 
 class LoginPage(HTMLPage):
-    def login(self, username, password):
+    def login(self, username, password, lastname):
         form = self.get_form()
         form['username'] = username
         form['password'] = password
+
+        if 'lastname' in form:
+            if not lastname:
+                raise BrowserIncorrectPassword('Veuillez renseigner votre nom de famille.')
+            form['lastname'] = lastname
+
         form.submit()