diff --git a/src/documents/migrations/1004_documenttype_slug.py b/src/documents/migrations/1004_documenttype_slug.py
deleted file mode 100644
index 557aa46d5..000000000
--- a/src/documents/migrations/1004_documenttype_slug.py
+++ /dev/null
@@ -1,36 +0,0 @@
-# Generated by Django 2.0.8 on 2018-10-07 14:20
-
-from django.db import migrations, models
-from django.utils.text import slugify
-
-
-def re_slug_all_the_things(apps, schema_editor):
-    """
-    Rewrite all slug values to make sure they're actually slugs before we brand
-    them as uneditable.
-    """
-
-    DocumentType = apps.get_model("documents", "DocumentType")
-
-    for instance in DocumentType.objects.all():
-        DocumentType.objects.filter(
-            pk=instance.pk
-        ).update(
-            slug=slugify(instance.slug)
-        )
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('documents', '1003_auto_20180904_1425'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='documenttype',
-            name='slug',
-            field=models.SlugField(blank=True, editable=False),
-        ),
-        migrations.RunPython(re_slug_all_the_things, migrations.RunPython.noop)
-    ]