diff --git a/bookwyrm/activitypub/person.py b/bookwyrm/activitypub/person.py
index 85cf44409..dfec92e4c 100644
--- a/bookwyrm/activitypub/person.py
+++ b/bookwyrm/activitypub/person.py
@@ -1,5 +1,5 @@
 """ actor serializer """
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import Dict
 
 from .base_activity import ActivityObject
@@ -35,7 +35,7 @@ class Person(ActivityObject):
     endpoints: Dict = None
     name: str = None
     summary: str = None
-    icon: Image = field(default_factory=lambda: {})
+    icon: Image = None
     bookwyrmUser: bool = False
     manuallyApprovesFollowers: str = False
     discoverable: str = False
diff --git a/bookwyrm/models/fields.py b/bookwyrm/models/fields.py
index 4bd580705..55ec25466 100644
--- a/bookwyrm/models/fields.py
+++ b/bookwyrm/models/fields.py
@@ -482,7 +482,7 @@ class ImageField(ActivitypubFieldMixin, models.ImageField):
         if not url:
             return None
 
-        return activitypub.Document(url=url, name=alt)
+        return activitypub.Image(url=url, name=alt)
 
     def field_from_activity(self, value, allow_external_connections=True):
         image_slug = value
diff --git a/bookwyrm/tests/models/test_fields.py b/bookwyrm/tests/models/test_fields.py
index d04178d4a..cc8c54113 100644
--- a/bookwyrm/tests/models/test_fields.py
+++ b/bookwyrm/tests/models/test_fields.py
@@ -438,7 +438,7 @@ class ModelFields(TestCase):
             )
         )
         self.assertEqual(output.name, "")
-        self.assertEqual(output.type, "Document")
+        self.assertEqual(output.type, "Image")
 
     @responses.activate
     def test_image_field_from_activity(self, *_):