diff --git a/vrobbler/apps/people/models.py b/vrobbler/apps/people/models.py
index 3c54f0a..969a2d3 100644
--- a/vrobbler/apps/people/models.py
+++ b/vrobbler/apps/people/models.py
@@ -30,9 +30,11 @@ class Person(TimeStampedModel):
     def update_scrobble_count(self):
         from scrobbles.models import Scrobble
 
-        count = Scrobble.objects.filter(
-            user=self.created_by,
-            log__with_people_ids__contains=self.id,
-        ).count()
+        count = 0
+        for scrobble in Scrobble.objects.filter(user=self.created_by):
+            if scrobble.log and isinstance(scrobble.log, dict):
+                person_ids = scrobble.log.get("with_people_ids", [])
+                if self.id in person_ids:
+                    count += 1
         self.scrobble_count = count
         self.save(update_fields=["scrobble_count"])