diff --git a/accounting/models.py b/accounting/models.py
index 97e7c32ad12e7a663b0225af765e83f37867b399..c09dc57962b2d259cfa430756a8bb81682577343 100644
--- a/accounting/models.py
+++ b/accounting/models.py
@@ -15,10 +15,10 @@ class Transaction:
             self.generate_id()
 
     def generate_id(self):
-        self.id = uuid.uuid4()
+        self.id = str(uuid.uuid4())
 
     def __repr__(self):
-        return ('<{self.__class__.__name__} {date}' +
+        return ('<{self.__class__.__name__} {self.id} {date}' +
                 ' {self.payee} {self.postings}').format(
                     self=self,
                     date=self.date.strftime('%Y-%m-%d'))