diff --git a/instances/models.py b/instances/models.py
index fa18483..b376491 100644
--- a/instances/models.py
+++ b/instances/models.py
@@ -3,7 +3,6 @@ from django.utils.functional import cached_property
 from django.utils.translation import gettext_lazy as _
 
 from libvirt import VIR_DOMAIN_XML_SECURE
-from vrtManager.create import wvmCreate
 from webvirtcloud.settings import QEMU_CONSOLE_LISTENER_ADDRESSES
 
 from computes.models import Compute
@@ -228,7 +227,7 @@ class MigrateInstance(models.Model):
 class CreateInstance(models.Model):
     compute = models.ForeignKey(Compute, related_name='host', on_delete=models.DO_NOTHING)
     name = models.CharField(max_length=64, error_messages={'required': _('No Virtual Machine name has been entered')})
-    firmware = models.CharField(max_length=50)
+    firmware = models.CharField(max_length=64)
     vcpu = models.IntegerField(error_messages={'required': _('No VCPU has been entered')})
     vcpu_mode = models.CharField(max_length=20, blank=True)
     disk = models.IntegerField(blank=True)
@@ -238,15 +237,15 @@ class CreateInstance(models.Model):
     storage = models.CharField(max_length=256, blank=True)
     template = models.CharField(max_length=256, blank=True)
     images = models.CharField(max_length=256, blank=True)
-    cache_mode = models.CharField(max_length=12, error_messages={'required': _('Please select HDD cache mode')})
+    cache_mode = models.CharField(max_length=16, error_messages={'required': _('Please select HDD cache mode')})
     hdd_size = models.IntegerField(blank=True)
     meta_prealloc = models.BooleanField(default=False, blank=True)
     virtio = models.BooleanField(default=True)
     qemu_ga = models.BooleanField(default=False)
     mac = models.CharField(max_length=17, blank=True)
     console_pass = models.CharField(max_length=64, blank=True)
-    graphics = models.CharField(max_length=12, error_messages={'required': _('Please select a graphics type')})
-    video = models.CharField(max_length=12, error_messages={'required': _('Please select a video driver')})
+    graphics = models.CharField(max_length=16, error_messages={'required': _('Please select a graphics type')})
+    video = models.CharField(max_length=16, error_messages={'required': _('Please select a video driver')})
     listener_addr = models.CharField(max_length=20, choices=QEMU_CONSOLE_LISTENER_ADDRESSES)
 
     class Meta: