diff --git a/petale/migrations/0001_initial.py b/petale/migrations/0001_initial.py
index 7ca9c1c..125cda1 100644
--- a/petale/migrations/0001_initial.py
+++ b/petale/migrations/0001_initial.py
@@ -19,22 +19,22 @@ class Migration(migrations.Migration):
             fields=[
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                 ('order', models.IntegerField(verbose_name='Order')),
-                ('methods', models.CharField(default=b'GET,PUT,DELETE', help_text=b'GET, PUT, DELETE', max_length=128, verbose_name='Allowed methods')),
-                ('key', models.CharField(default=b'*', max_length=128, verbose_name='Allowed keys', validators=[])),
+                ('methods', models.CharField(default='GET,PUT,DELETE', help_text='GET, PUT, DELETE', max_length=128, verbose_name='Allowed methods')),
+                ('key', models.CharField(default='*', max_length=128, verbose_name='Allowed keys', validators=[])),
             ],
         ),
         migrations.CreateModel(
             name='CUTIdentifier',
             fields=[
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
-                ('uuid', models.CharField(max_length=32, validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$', message=b'Invalid uuid format')])),
+                ('uuid', models.CharField(max_length=32, validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$', message='Invalid uuid format')])),
             ],
         ),
         migrations.CreateModel(
             name='Partner',
             fields=[
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
-                ('name', models.CharField(max_length=64, verbose_name='Partner', validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$', message=b'Invalid name format')])),
+                ('name', models.CharField(max_length=64, verbose_name='Partner', validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$', message='Invalid name format')])),
                 ('admin_emails', models.CharField(help_text='List of admin emails separated by comma', max_length=256, verbose_name='Admin emails')),
                 ('hard_global_max_size', models.IntegerField(verbose_name='Hard max size')),
                 ('soft_global_max_size', models.IntegerField(verbose_name='Soft max size')),
@@ -48,9 +48,9 @@ class Migration(migrations.Migration):
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                 ('created_at', models.DateTimeField(auto_now_add=True)),
                 ('updated_at', models.DateTimeField(auto_now=True)),
-                ('name', models.CharField(max_length=128, verbose_name='Name', validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$', message=b'Invalid name format')])),
+                ('name', models.CharField(max_length=128, verbose_name='Name', validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$', message='Invalid name format')])),
                 ('etag', models.CharField(max_length=256, verbose_name='ETag', blank=True)),
-                ('data', models.FileField(upload_to=b'data', verbose_name='Data Content', blank=True)),
+                ('data', models.FileField(upload_to='data', verbose_name='Data Content', blank=True)),
                 ('content_type', models.CharField(max_length=128, verbose_name='Content type', blank=True)),
                 ('size', models.IntegerField(default=0, verbose_name='Size')),
                 ('cut_id', models.ForeignKey(to='petale.CUTIdentifier', on_delete=models.CASCADE)),
diff --git a/petale/migrations/0002_auto_20170329_1823.py b/petale/migrations/0002_auto_20170329_1823.py
index c1880d0..281404f 100644
--- a/petale/migrations/0002_auto_20170329_1823.py
+++ b/petale/migrations/0002_auto_20170329_1823.py
@@ -22,7 +22,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='accesscontrollist',
             name='key',
-            field=models.CharField(default=b'*', max_length=128, verbose_name='Allowed keys', validators=[django.core.validators.MinLengthValidator(3)]),
+            field=models.CharField(default='*', max_length=128, verbose_name='Allowed keys'),
         ),
         migrations.AlterField(
             model_name='accesscontrollist',
@@ -37,12 +37,12 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='cutidentifier',
             name='uuid',
-            field=models.CharField(max_length=32, validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$')]),
+            field=models.CharField(max_length=32, validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$')]),
         ),
         migrations.AlterField(
             model_name='partner',
             name='name',
-            field=models.CharField(max_length=64, verbose_name='Partner', validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$')]),
+            field=models.CharField(max_length=64, verbose_name='Partner', validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$')]),
         ),
         migrations.AlterField(
             model_name='petal',
@@ -67,7 +67,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='petal',
             name='name',
-            field=models.CharField(max_length=128, verbose_name='Name', validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$')]),
+            field=models.CharField(max_length=128, verbose_name='Name', validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$')]),
         ),
         migrations.AlterField(
             model_name='petal',
diff --git a/petale/migrations/0004_auto_20170330_0046.py b/petale/migrations/0004_auto_20170330_0046.py
index 0c152f6..cdf4993 100644
--- a/petale/migrations/0004_auto_20170330_0046.py
+++ b/petale/migrations/0004_auto_20170330_0046.py
@@ -31,7 +31,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='accesscontrollist',
             name='key',
-            field=models.CharField(default=b'*', max_length=128, verbose_name='Allowed keys'),
+            field=models.CharField(default='*', max_length=128, verbose_name='Allowed keys'),
         ),
         migrations.AlterField(
             model_name='partner',
@@ -51,7 +51,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='partner',
             name='name',
-            field=models.CharField(unique=True, max_length=64, verbose_name='Partner', validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$')]),
+            field=models.CharField(unique=True, max_length=64, verbose_name='Partner', validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$')]),
         ),
         migrations.AlterField(
             model_name='partner',
diff --git a/petale/migrations/0005_auto_20170721_1416.py b/petale/migrations/0005_auto_20170721_1416.py
index 703c28a..8d2e582 100644
--- a/petale/migrations/0005_auto_20170721_1416.py
+++ b/petale/migrations/0005_auto_20170721_1416.py
@@ -16,7 +16,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='cut',
             name='uuid',
-            field=models.CharField(max_length=255, validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$')]),
+            field=models.CharField(max_length=255, validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$')]),
         ),
         migrations.AlterField(
             model_name='petal',
diff --git a/petale/migrations/0007_auto_20180110_1126.py b/petale/migrations/0007_auto_20180110_1126.py
index e0f3491..f85fcff 100644
--- a/petale/migrations/0007_auto_20180110_1126.py
+++ b/petale/migrations/0007_auto_20180110_1126.py
@@ -15,6 +15,6 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='cut',
             name='uuid',
-            field=models.CharField(unique=True, max_length=255, validators=[django.core.validators.RegexValidator(b'^[A-Za-z0-9-_]+$')]),
+            field=models.CharField(unique=True, max_length=255, validators=[django.core.validators.RegexValidator('^[A-Za-z0-9-_]+$')]),
         ),
     ]