diff --git a/ereuse_devicehub/resources/lot/models.py b/ereuse_devicehub/resources/lot/models.py
index 991e71b9..88c68626 100644
--- a/ereuse_devicehub/resources/lot/models.py
+++ b/ereuse_devicehub/resources/lot/models.py
@@ -102,7 +102,7 @@ class Lot(Thing):
 
     @property
     def is_temporary(self):
-        return False if self.trade else True
+        return not bool(self.trade)
 
     @property
     def is_incoming(self):
@@ -110,9 +110,7 @@ class Lot(Thing):
 
     @property
     def is_outgoing(self):
-        if self.trade and self.trade.user_from == current_user:
-            return True
-        return False
+        return bool(self.trade and self.trade.user_from == current_user)
 
     @classmethod
     def descendantsq(cls, id):