diff --git a/machines/migrations/0107_fix_lowercase_domain.py b/machines/migrations/0107_fix_lowercase_domain.py
new file mode 100644
index 00000000..c9aebba2
--- /dev/null
+++ b/machines/migrations/0107_fix_lowercase_domain.py
@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations
+from django.core.exceptions import ValidationError
+
+def fix_duplicate(apps, schema_editor):
+    db_alias = schema_editor.connection.alias
+    domain = apps.get_model("machines", "Domain")
+    machines_to_fix = list(filter(lambda m : not m.name.islower(), domain.objects.using(db_alias).all()))
+    for machine in machines_to_fix:
+        try:
+            machine.name = machine.name.lower()
+            machine.validate_unique()
+            machine.clean()
+        except ValidationError:
+            machine.name = machine.name.lower() + str(machine.interface_parent.id)
+            machine.clean() 
+        machine.save()
+
+def unfix_duplicate(apps, schema_editor):
+    return
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [("machines", "0106_auto_20191120_0159")]
+
+    operations = [
+        migrations.RunPython(fix_duplicate, unfix_duplicate),
+    ]