diff --git a/wagtail/wagtailimages/backends/__init__.py b/wagtail/wagtailimages/backends/__init__.py
index 62d0c1c78..e60b89688 100644
--- a/wagtail/wagtailimages/backends/__init__.py
+++ b/wagtail/wagtailimages/backends/__init__.py
@@ -8,11 +8,15 @@ except ImportError:
     # for Python 2.6, fall back on django.utils.importlib (deprecated as of Django 1.7)
     from django.utils.importlib import import_module
 
-from django.utils import six
 import sys
-from django.conf import settings
 
-from base import InvalidImageBackendError
+from django.utils import six
+from django.conf import settings
+from django.core.exceptions import ImproperlyConfigured
+
+
+class InvalidImageBackendError(ImproperlyConfigured):
+    pass
 
 # Pinched from django 1.7 source code.
 # TODO: Replace this with "from django.utils.module_loading import import_string"
diff --git a/wagtail/wagtailimages/backends/base.py b/wagtail/wagtailimages/backends/base.py
index ce07420e3..7024c358d 100644
--- a/wagtail/wagtailimages/backends/base.py
+++ b/wagtail/wagtailimages/backends/base.py
@@ -1,9 +1,4 @@
 from django.conf import settings
-from django.core.exceptions import ImproperlyConfigured
-
-
-class InvalidImageBackendError(ImproperlyConfigured):
-    pass
 
 
 class BaseImageBackend(object):
diff --git a/wagtail/wagtailredirects/middleware.py b/wagtail/wagtailredirects/middleware.py
index 6fdd6fa27..e65d1be98 100644
--- a/wagtail/wagtailredirects/middleware.py
+++ b/wagtail/wagtailredirects/middleware.py
@@ -1,6 +1,6 @@
 from django import http
 
-import models
+from wagtail.wagtailredirects import models
 
 
 # Originally pinched from: https://github.com/django/django/blob/master/django/contrib/redirects/middleware.py
diff --git a/wagtail/wagtailredirects/views.py b/wagtail/wagtailredirects/views.py
index 8dfd687f1..2a57ae57b 100644
--- a/wagtail/wagtailredirects/views.py
+++ b/wagtail/wagtailredirects/views.py
@@ -8,7 +8,7 @@ from django.views.decorators.vary import vary_on_headers
 from wagtail.wagtailadmin.edit_handlers import ObjectList
 from wagtail.wagtailadmin.forms import SearchForm
 
-import models
+from wagtail.wagtailredirects import models
 
 
 REDIRECT_EDIT_HANDLER = ObjectList(models.Redirect.content_panels)
diff --git a/wagtail/wagtailsearch/__init__.py b/wagtail/wagtailsearch/__init__.py
index 2b074bd9c..ed896f445 100644
--- a/wagtail/wagtailsearch/__init__.py
+++ b/wagtail/wagtailsearch/__init__.py
@@ -1,3 +1,3 @@
-from indexed import Indexed
-from signal_handlers import register_signal_handlers
-from backends import get_search_backend
\ No newline at end of file
+from wagtail.wagtailsearch.indexed import Indexed
+from wagtail.wagtailsearch.signal_handlers import register_signal_handlers
+from wagtail.wagtailsearch.backends import get_search_backend
\ No newline at end of file
diff --git a/wagtail/wagtailsearch/backends/__init__.py b/wagtail/wagtailsearch/backends/__init__.py
index 5e1b4fc5d..cf33cf5c1 100644
--- a/wagtail/wagtailsearch/backends/__init__.py
+++ b/wagtail/wagtailsearch/backends/__init__.py
@@ -8,10 +8,15 @@ except ImportError:
     # for Python 2.6, fall back on django.utils.importlib (deprecated as of Django 1.7)
     from django.utils.importlib import import_module
 
-from django.utils import six
 import sys
+
+from django.utils import six
 from django.conf import settings
-from base import InvalidSearchBackendError
+from django.core.exceptions import ImproperlyConfigured
+
+
+class InvalidSearchBackendError(ImproperlyConfigured):
+    pass
 
 
 # Pinched from django 1.7 source code.
diff --git a/wagtail/wagtailsearch/backends/base.py b/wagtail/wagtailsearch/backends/base.py
index 689be7bbe..393ecae1b 100644
--- a/wagtail/wagtailsearch/backends/base.py
+++ b/wagtail/wagtailsearch/backends/base.py
@@ -1,13 +1,8 @@
 from django.db import models
-from django.core.exceptions import ImproperlyConfigured
 
 from wagtail.wagtailsearch.indexed import Indexed
 
 
-class InvalidSearchBackendError(ImproperlyConfigured):
-    pass
-
-
 class BaseSearch(object):
     def __init__(self, params):
         pass
diff --git a/wagtail/wagtailsearch/forms.py b/wagtail/wagtailsearch/forms.py
index 9485e4619..aaffad052 100644
--- a/wagtail/wagtailsearch/forms.py
+++ b/wagtail/wagtailsearch/forms.py
@@ -1,7 +1,8 @@
 from django import forms
 from django.forms.models import inlineformset_factory
 from django.utils.translation import ugettext_lazy as _
-import models
+
+from wagtail.wagtailsearch import models
 
 
 class QueryForm(forms.Form):
diff --git a/wagtail/wagtailsearch/views/__init__.py b/wagtail/wagtailsearch/views/__init__.py
index 46e2526f6..7f39327bd 100644
--- a/wagtail/wagtailsearch/views/__init__.py
+++ b/wagtail/wagtailsearch/views/__init__.py
@@ -1 +1 @@
-from frontend import search
\ No newline at end of file
+from wagtail.wagtailsearch.views.frontend import search
\ No newline at end of file