diff --git a/boards/utils.py b/boards/utils.py
--- a/boards/utils.py
+++ b/boards/utils.py
@@ -1,24 +1,22 @@
 """
 This module contains helper functions and helper classes.
 """
-import hashlib
+import time
 import uuid
 
-from boards.abstracts.constants import FILE_DIRECTORY
-from random import random
-import time
+import hashlib
 import hmac
-
+import magic
+import os
+from django import forms
 from django.core.cache import cache
 from django.db.models import Model
-from django import forms
 from django.template.defaultfilters import filesizeformat
 from django.utils import timezone
 from django.utils.translation import ugettext_lazy as _
-import magic
-import os
 
 import boards
+from boards.abstracts.constants import FILE_DIRECTORY
 from boards.settings import get_bool
 from neboard import settings
 
@@ -58,20 +56,6 @@ def datetime_to_epoch(datetime):
                * 1000000 + datetime.microsecond)
 
 
-def get_websocket_token(user_id='', timestamp=''):
-    """
-    Create token to validate information provided by new connection.
-    """
-
-    sign = hmac.new(settings.CENTRIFUGE_PROJECT_SECRET.encode())
-    sign.update(settings.CENTRIFUGE_PROJECT_ID.encode())
-    sign.update(user_id.encode())
-    sign.update(timestamp.encode())
-    token = sign.hexdigest()
-
-    return token
-
-
 # TODO Test this carefully
 def cached_result(key_method=None):
     """
@@ -117,7 +101,7 @@ def get_file_hash(file) -> str:
 
 def validate_file_size(size: int):
     max_size = boards.settings.get_int('Forms', 'MaxFileSize')
-    if max_size > 0 and size > max_size:
+    if 0 < max_size < size:
         raise forms.ValidationError(
             _('File must be less than %s but is %s.')
             % (filesizeformat(max_size), filesizeformat(size)))