diff --git a/pandora/system/migrations/0003_field_length.py b/pandora/system/migrations/0003_field_length.py
index a499f65c..6cb2938b 100644
--- a/pandora/system/migrations/0003_field_length.py
+++ b/pandora/system/migrations/0003_field_length.py
@@ -19,7 +19,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='user',
             name='last_name',
-            fields=models.CharField(blank=True, max_length=30, verbose_name='last name'),
+            field=models.CharField(blank=True, max_length=150, verbose_name='last name'),
         ),
         migrations.AlterField(
             model_name='user',