diff --git a/backend/src/baserow/api/v0/applications/serializers.py b/backend/src/baserow/api/v0/applications/serializers.py
index 8d87124a0..fe73d1b67 100644
--- a/backend/src/baserow/api/v0/applications/serializers.py
+++ b/backend/src/baserow/api/v0/applications/serializers.py
@@ -29,7 +29,6 @@ class ApplicationCreateSerializer(serializers.ModelSerializer):
         fields = ('name', 'type')
 
 
-
 class ApplicationUpdateSerializer(serializers.ModelSerializer):
     class Meta:
         model = Application
diff --git a/backend/src/baserow/contrib/database/api_urls.py b/backend/src/baserow/contrib/database/api_urls.py
index 01ab3f1cd..916b115e0 100644
--- a/backend/src/baserow/contrib/database/api_urls.py
+++ b/backend/src/baserow/contrib/database/api_urls.py
@@ -1,6 +1,3 @@
-from django.conf.urls import url
-
-
 app_name = 'baserow.contrib.database'
 
 urlpatterns = [
diff --git a/backend/src/baserow/contrib/database/migrations/0001_initial.py b/backend/src/baserow/contrib/database/migrations/0001_initial.py
index 74849d797..1012e38fd 100644
--- a/backend/src/baserow/contrib/database/migrations/0001_initial.py
+++ b/backend/src/baserow/contrib/database/migrations/0001_initial.py
@@ -16,16 +16,31 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='Database',
             fields=[
-                ('application_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='core.Application')),
+                ('application_ptr', models.OneToOneField(
+                    auto_created=True,
+                    on_delete=django.db.models.deletion.CASCADE,
+                    parent_link=True,
+                    primary_key=True,
+                    serialize=False,
+                    to='core.Application')
+                 ),
             ],
             bases=('core.application',),
         ),
         migrations.CreateModel(
             name='Table',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('id', models.AutoField(
+                    auto_created=True,
+                    primary_key=True,
+                    serialize=False,
+                    verbose_name='ID')
+                 ),
                 ('order', models.PositiveIntegerField()),
-                ('group', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='database.Database')),
+                ('group', models.ForeignKey(
+                    on_delete=django.db.models.deletion.CASCADE,
+                    to='database.Database')
+                 ),
             ],
         ),
     ]
diff --git a/backend/src/baserow/core/migrations/0002_application.py b/backend/src/baserow/core/migrations/0002_application.py
index 8fda2da50..5661ba577 100644
--- a/backend/src/baserow/core/migrations/0002_application.py
+++ b/backend/src/baserow/core/migrations/0002_application.py
@@ -17,11 +17,18 @@ class Migration(migrations.Migration):
         migrations.CreateModel(
             name='Application',
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('id', models.AutoField(auto_created=True, primary_key=True,
+                                        serialize=False, verbose_name='ID')),
                 ('name', models.CharField(max_length=50)),
                 ('order', models.PositiveIntegerField()),
-                ('content_type', models.ForeignKey(on_delete=models.SET(baserow.core.models.get_default_application_content_type), related_name='applications', to='contenttypes.ContentType', verbose_name='content type')),
-                ('group', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='core.Group')),
+                ('content_type', models.ForeignKey(
+                    on_delete=models.SET(
+                        baserow.core.models.get_default_application_content_type),
+                    related_name='applications', to='contenttypes.ContentType',
+                    verbose_name='content type')
+                 ),
+                ('group', models.ForeignKey(
+                    on_delete=django.db.models.deletion.CASCADE, to='core.Group')),
             ],
             options={
                 'ordering': ('order',),