diff --git a/modules/dresdenwetter/backend.py b/modules/dresdenwetter/backend.py
index 9785c08fe20ed89eda769a310d0544743e30d4e7..4985912cbead9ba68f84c377152856f8d57a08d0 100644
--- a/modules/dresdenwetter/backend.py
+++ b/modules/dresdenwetter/backend.py
@@ -56,7 +56,7 @@ def _get_sensor_by_id(self, id):
 
     def iter_sensors(self, gauge, pattern=None):
         if not isinstance(gauge, Gauge):
-            gauge = find_object(self.iter_gauges(), gauge, error=SensorNotFound)
+            gauge = find_object(self.iter_gauges(), id=gauge, error=SensorNotFound)
         if pattern is None:
             for sensor in gauge.sensors:
                 yield sensor
diff --git a/modules/ing/backend.py b/modules/ing/backend.py
index 92076d3c7939f72f581af1e5048515e26afadadc..31b16e100da30d27ed837ee498aedc0ecf895e40 100644
--- a/modules/ing/backend.py
+++ b/modules/ing/backend.py
@@ -68,7 +68,7 @@ def iter_accounts(self):
         return self.browser.get_accounts_list()
 
     def get_account(self, _id):
-        return find_object(self.browser.get_accounts_list(), _id, error=AccountNotFound)
+        return find_object(self.browser.get_accounts_list(), id=_id, error=AccountNotFound)
 
     def iter_history(self, account):
         if not isinstance(account, Account):
@@ -100,11 +100,11 @@ def iter_subscription(self):
         return self.browser.get_subscriptions()
 
     def get_subscription(self, _id):
-        return find_object(self.browser.get_subscriptions(), _id, error=SubscriptionNotFound)
+        return find_object(self.browser.get_subscriptions(), id=_id, error=SubscriptionNotFound)
 
-    def get_bill(self, id):
-        subscription = self.get_subscription(id.split('-')[0])
-        return find_object(self.browser.get_bills(subscription), id, error=BillNotFound)
+    def get_bill(self, _id):
+        subscription = self.get_subscription(_id.split('-')[0])
+        return find_object(self.browser.get_bills(subscription), id=_id, error=BillNotFound)
 
     def iter_bills(self, subscription):
         if not isinstance(subscription, Subscription):
diff --git a/modules/poivy/backend.py b/modules/poivy/backend.py
index 87638ca82532e79d12411ebec5c765265d51756a..4b971c6f17a6bc22eb0f9224eb918430a7c41f5e 100644
--- a/modules/poivy/backend.py
+++ b/modules/poivy/backend.py
@@ -52,7 +52,7 @@ def iter_subscription(self):
         return self.browser.get_subscription_list()
 
     def get_subscription(self, _id):
-        return find_object(self.iter_subscription(), _id, error=SubscriptionNotFound)
+        return find_object(self.iter_subscription(), id=_id, error=SubscriptionNotFound)
 
     def iter_bills_history(self, subscription):
         # Try if we have a real subscription before to load the history
diff --git a/modules/sachsen/backend.py b/modules/sachsen/backend.py
index d2840609d827f90a03aae907d7be30f52d5e7390..7a63380d8a3e3cce525c97be9e4eb9a6ec446f85 100644
--- a/modules/sachsen/backend.py
+++ b/modules/sachsen/backend.py
@@ -56,7 +56,7 @@ def _get_sensor_by_id(self, id):
 
     def iter_sensors(self, gauge, pattern=None):
         if not isinstance(gauge, Gauge):
-            gauge = find_object(self.browser.get_rivers_list(), gauge, error=SensorNotFound)
+            gauge = find_object(self.browser.get_rivers_list(), id=gauge, error=SensorNotFound)
         if pattern is None:
             for sensor in gauge.sensors:
                 yield sensor
diff --git a/weboob/capabilities/base.py b/weboob/capabilities/base.py
index edd145a686857bf0944ff6c18511c28f6fc99f3d..6c6ae0442f5ffe97fcc48261936913fb8a45235b 100644
--- a/weboob/capabilities/base.py
+++ b/weboob/capabilities/base.py
@@ -46,13 +46,20 @@ def empty(value):
             return True
     return False
 
-def find_object(mylist, _id, error=None):
+def find_object(mylist, error=None, **kwargs):
     """
-    Very simple tools to return an object with the matching _id
+    Very simple tools to return an object with the matching parameters in
+    kwargs.
     """
     for a in mylist:
-        if a.id == _id:
+        found = True
+        for key, value in kwargs.iteritems():
+            if getattr(a, key) != value:
+                found = False
+                break
+        if found:
             return a
+
     if error is not None:
         raise error()
     return None