diff --git a/pandora/annotation/migrations/0004_alter_annotation_findvalue_alter_annotation_id.py b/pandora/annotation/migrations/0004_alter_annotation_findvalue_alter_annotation_id.py
index b767efee..bbf08720 100644
--- a/pandora/annotation/migrations/0004_alter_annotation_findvalue_alter_annotation_id.py
+++ b/pandora/annotation/migrations/0004_alter_annotation_findvalue_alter_annotation_id.py
@@ -10,6 +10,11 @@ class Migration(migrations.Migration):
     ]
 
     operations = [
+        migrations.AlterField(
+            model_name='annotation',
+            name='findvalue',
+            field=models.TextField(db_index=True, null=True),
+        ),
         migrations.AlterField(
             model_name='annotation',
             name='id',
diff --git a/pandora/settings.py b/pandora/settings.py
index 52ac5fc3..eae5c942 100644
--- a/pandora/settings.py
+++ b/pandora/settings.py
@@ -190,7 +190,7 @@ CACHES = {
     }
 }
 
-DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+DEFAULT_AUTO_FIELD = "django.db.models.AutoField"
 
 
 AUTH_PROFILE_MODULE = 'user.UserProfile'