diff --git a/helpdesk/migrations/0002_populate_usersettings.py b/helpdesk/migrations/0002_populate_usersettings.py
index 9c60205f..b35bfc80 100644
--- a/helpdesk/migrations/0002_populate_usersettings.py
+++ b/helpdesk/migrations/0002_populate_usersettings.py
@@ -5,13 +5,13 @@ from django.db import models, migrations
 from helpdesk.settings import DEFAULT_USER_SETTINGS
 
 
-def picke_settings(data):
+def pickle_settings(data):
     """Pickling as defined at migration's creation time"""
     try:
         import pickle
     except ImportError:
         import cPickle as pickle
-    from helpdesk.lib import b64encode
+    from helpdesk.query import b64encode
     return b64encode(pickle.dumps(data))
 
 
@@ -27,7 +27,7 @@ def populate_usersettings(apps, schema_editor):
     # Import historical version of models
     UserSettings = apps.get_model("helpdesk", "UserSettings")
 
-    settings_pickled = picke_settings(DEFAULT_USER_SETTINGS)
+    settings_pickled = pickle_settings(DEFAULT_USER_SETTINGS)
 
     for u in User.objects.all():
         try:
diff --git a/helpdesk/tests/test_attachments.py b/helpdesk/tests/test_attachments.py
index 2f011d71..89b50017 100644
--- a/helpdesk/tests/test_attachments.py
+++ b/helpdesk/tests/test_attachments.py
@@ -98,7 +98,7 @@ class AttachmentUnitTests(TestCase):
 
     @mock.patch('helpdesk.lib.FollowUpAttachment', autospec=True)
     def test_unicode_attachment_filename(self, mock_att_save, mock_queue_save, mock_ticket_save, mock_follow_up_save):
-        """ check utf-8 data is parsed correcltly """
+        """ check utf-8 data is parsed correctly """
         filename, fileobj = lib.process_attachments(self.follow_up, [self.test_file])[0]
         mock_att_save.assert_called_with(
             file=self.test_file,
@@ -111,7 +111,7 @@ class AttachmentUnitTests(TestCase):
 
     @mock.patch('helpdesk.lib.FollowUpAttachment', autospec=True)
     def test_autofill(self, mock_att_save, mock_queue_save, mock_ticket_save, mock_follow_up_save):
-        """ check utf-8 data is parsed correcltly """
+        """ check utf-8 data is parsed correctly """
         self.follow_up.pk = 100
         obj = models.FollowUpAttachment.objects.create(
             followup=self.follow_up,
@@ -122,7 +122,7 @@ class AttachmentUnitTests(TestCase):
         self.assertEqual(obj.mime_type, "text/plain")
 
     def test_kbi_attachment(self, mock_att_save, mock_queue_save, mock_ticket_save):
-        """ check utf-8 data is parsed correcltly """
+        """ check utf-8 data is parsed correctly """
 
         kbcategory = models.KBCategory.objects.create(
             title="Title",
diff --git a/helpdesk/views/staff.py b/helpdesk/views/staff.py
index 240d97a4..14b6be86 100644
--- a/helpdesk/views/staff.py
+++ b/helpdesk/views/staff.py
@@ -906,9 +906,20 @@ def ticket_list(request):
 
     urlsafe_query = query_to_base64(query_params)
 
-    get_query(urlsafe_query, huser)
+    tickets_base = get_query(urlsafe_query, huser)
 
     user_saved_queries = SavedSearch.objects.filter(Q(user=request.user) | Q(shared__exact=True))
+    
+    ticket_qs = None
+    try:
+        ticket_qs = apply_query(tickets_base, query_params)
+    except ValidationError:
+        # invalid parameters in query, return default query
+        query_params = {
+            'filtering': {'status__in': [1, 2, 3]},
+            'sorting': 'created',
+        }
+        ticket_qs = apply_query(tickets_base, query_params)
 
     search_message = ''
     if query_params['search_string'] and settings.DATABASES['default']['ENGINE'].endswith('sqlite'):
@@ -923,6 +934,7 @@ def ticket_list(request):
 
     return render(request, 'helpdesk/ticket_list.html', dict(
         context,
+        tickets=ticket_qs,
         default_tickets_per_page=request.user.usersettings_helpdesk.tickets_per_page,
         user_choices=User.objects.filter(is_active=True, is_staff=True),
         queue_choices=huser.get_queues(),