diff --git a/modules/leboncoin/backend.py b/modules/leboncoin/backend.py
index ff43efc32210bb19cc2f3e84a4da16029dcf5ffb..108810ea4b001e879cacdfe7e9a196d02d648cc0 100644
--- a/modules/leboncoin/backend.py
+++ b/modules/leboncoin/backend.py
@@ -67,7 +67,8 @@ def search_housings(self, query):
 
         ret = []
         for g in query.house_types:
-            ret.append(self.RET.get(g))
+            if g in self.RET:
+                ret.append(self.RET.get(g))
 
         if len(ret) == 0:
             return list()
diff --git a/weboob/capabilities/housing.py b/weboob/capabilities/housing.py
index f7da4f38395191314102de676937bfa7fac5a210..41f8cd4fcba4d4581ac521e22be72a36c0f1fcff 100644
--- a/weboob/capabilities/housing.py
+++ b/weboob/capabilities/housing.py
@@ -85,7 +85,8 @@ def enum(**enums):
                        HOUSE=u'House',
                        PARKING=u'Parking',
                        LAND=u'Land',
-                       OTHER=u'Other')
+                       OTHER=u'Other',
+                       UNKNOWN=u'Unknown')
 
     type = IntField('Type of housing to find (TYPE_* constants)')
     cities = Field('List of cities to search in', list, tuple)
@@ -94,13 +95,7 @@ def enum(**enums):
     cost_min = IntField('Minimal cost')
     cost_max = IntField('Maximal cost')
     nb_rooms = IntField('Number of rooms')
-    house_types = Field('List of house types', list, tuple)
-
-    def __init__(self):
-        BaseObject.__init__(self, '')
-        self.house_types = []
-        for value in self.HOUSE_TYPES.values:
-            self.house_types.append(value)
+    house_types = Field('List of house types', list, tuple, default=HOUSE_TYPES.values)
 
 
 class City(BaseObject):