diff --git a/buyer/models.py b/buyer/models.py
index 90ee8ca..fdfe2db 100644
--- a/buyer/models.py
+++ b/buyer/models.py
@@ -5,4 +5,7 @@ from django.db import models
 class Card(models.Model):
     number = models.IntegerField("Card number", primary_key=True)
     purchased = models.DateTimeField("Card purchased", auto_now_add=True)
-    delivered = models.DateTimeField("Card delivered to Oma", default=None, null=True)
\ No newline at end of file
+    delivered = models.DateTimeField("Card delivered to Oma", default=None, null=True)
+
+    def __str__(self):
+        return str(self.number)
\ No newline at end of file
diff --git a/dbsettings/models.py b/dbsettings/models.py
index c26c0ce..7fa8887 100644
--- a/dbsettings/models.py
+++ b/dbsettings/models.py
@@ -4,4 +4,7 @@ from django.db import models
 
 class Setting(models.Model):
     key = models.CharField(primary_key=True, max_length=512)
-    value = models.CharField(max_length=512)
\ No newline at end of file
+    value = models.CharField(max_length=512)
+
+    def __str__(self):
+        return self.key
\ No newline at end of file
diff --git a/ledger/models.py b/ledger/models.py
index 1682efa..bfdde50 100644
--- a/ledger/models.py
+++ b/ledger/models.py
@@ -6,4 +6,7 @@ class Payment(models.Model):
     description = models.CharField("Payment description", max_length=128)
     amount = models.DecimalField("Payment amount", max_digits=15, decimal_places=2)
     date = models.DateTimeField("Date of payment", auto_now_add=True)
-    repayment = models.DateTimeField("Date of repayment", default=None, null=True)
\ No newline at end of file
+    repayment = models.DateTimeField("Date of repayment", default=None, null=True)
+
+    def __str__(self):
+        return self.description
\ No newline at end of file