migrations/0005_increase_request_prof_file_length.py does not match code

[xrmx]

The migration make the field nullable while the code uses blank=True. If you run makemigrations the following migrations is generated:

# -*- coding: utf-8 -*-
# Generated by Django 1.11.7 on 2017-12-28 13:59
from __future__ import unicode_literals

from django.db import migrations, models
import silk.storage


class Migration(migrations.Migration):

    dependencies = [
        ('silk', '0005_increase_request_prof_file_length'),
    ]

    operations = [
        migrations.AlterField(
            model_name='request',
            name='prof_file',
            field=models.FileField(blank=True, max_length=300, storage=silk.storage.ProfilerResultStorage(), upload_to=b''),
        ),
    ]