diff --git a/netbox_acls/api/serializers.py b/netbox_acls/api/serializers.py
index 4ae93977..39cd253a 100644
--- a/netbox_acls/api/serializers.py
+++ b/netbox_acls/api/serializers.py
@@ -73,13 +73,13 @@ class Meta:
             "last_updated",
             "rule_count",
         )
-        brief_fields = ("id", "url", "name", "display")
+        brief_fields = ("id", "url", "display", "name")
 
-    @extend_schema_field(serializers.DictField())
+    @extend_schema_field(serializers.JSONField(allow_null=True))
     def get_assigned_object(self, obj):
-        serializer = get_serializer_for_model(
-            obj.assigned_object,
-        )
+        if obj.assigned_object is None:
+            return None
+        serializer = get_serializer_for_model(obj.assigned_object)
         context = {"request": self.context["request"]}
         return serializer(obj.assigned_object, nested=True, context=context).data
 
@@ -126,6 +126,7 @@ class Meta:
         fields = (
             "id",
             "url",
+            "display",
             "access_list",
             "direction",
             "assigned_object_type",
@@ -137,10 +138,12 @@ class Meta:
             "created",
             "last_updated",
         )
-        brief_fields = ("id", "url", "access_list")
+        brief_fields = ("id", "url", "display", "access_list")
 
-    @extend_schema_field(serializers.DictField())
+    @extend_schema_field(serializers.JSONField(allow_null=True))
     def get_assigned_object(self, obj):
+        if obj.assigned_object is None:
+            return None
         serializer = get_serializer_for_model(obj.assigned_object)
         context = {"request": self.context["request"]}
         return serializer(obj.assigned_object, nested=True, context=context).data
@@ -203,15 +206,15 @@ class Meta:
             "access_list",
             "index",
             "action",
-            "tags",
-            "description",
             "remark",
+            "source_prefix",
+            "description",
+            "tags",
             "created",
             "custom_fields",
             "last_updated",
-            "source_prefix",
         )
-        brief_fields = ("id", "url", "display")
+        brief_fields = ("id", "url", "display", "access_list", "index")
 
     def validate(self, data):
         """
@@ -274,19 +277,19 @@ class Meta:
             "access_list",
             "index",
             "action",
-            "tags",
-            "description",
-            "created",
-            "custom_fields",
-            "last_updated",
+            "remark",
+            "protocol",
             "source_prefix",
             "source_ports",
             "destination_prefix",
             "destination_ports",
-            "protocol",
-            "remark",
+            "description",
+            "tags",
+            "created",
+            "custom_fields",
+            "last_updated",
         )
-        brief_fields = ("id", "url", "display")
+        brief_fields = ("id", "url", "display", "access_list", "index")
 
     def validate(self, data):
         """
diff --git a/netbox_acls/models/access_lists.py b/netbox_acls/models/access_lists.py
index e65f7659..39a55f4a 100644
--- a/netbox_acls/models/access_lists.py
+++ b/netbox_acls/models/access_lists.py
@@ -28,7 +28,7 @@
 
 class AccessList(NetBoxModel):
     """
-    Model defintion for Access Lists.
+    Model definition for Access Lists.
     """
 
     name = models.CharField(
@@ -89,10 +89,9 @@ def get_type_color(self):
 
 class ACLInterfaceAssignment(NetBoxModel):
     """
-    Model defintion for Access Lists associations with other Host interfaces:
+    Model definition for Access Lists associations with other Host interfaces:
       - VM interfaces
       - device interface
-      - tbd on more
     """
 
     access_list = models.ForeignKey(
@@ -119,6 +118,7 @@ class ACLInterfaceAssignment(NetBoxModel):
     )
 
     clone_fields = ("access_list", "direction")
+    prerequisite_models = ("netbox_acls.AccessList",)
 
     class Meta:
         unique_together = [
@@ -136,6 +136,9 @@ class Meta:
         verbose_name = "ACL Interface Assignment"
         verbose_name_plural = "ACL Interface Assignments"
 
+    def __str__(self):
+        return f"{self.access_list}: Interface {self.assigned_object}"
+
     def get_absolute_url(self):
         """
         The method is a Django convention; although not strictly required,
@@ -146,10 +149,6 @@ def get_absolute_url(self):
             args=[self.pk],
         )
 
-    @classmethod
-    def get_prerequisite_models(cls):
-        return [AccessList]
-
     def get_direction_color(self):
         return ACLAssignmentDirectionChoices.colors.get(self.direction)