diff --git a/mayan/apps/documents/managers.py b/mayan/apps/documents/managers.py
index 8aacf5f4a3..beccf494a6 100644
--- a/mayan/apps/documents/managers.py
+++ b/mayan/apps/documents/managers.py
@@ -34,21 +34,6 @@ class DocumentManager(models.Manager):
             document.invalidate_cache()
 
 
-class DocumentPageCachedImage(models.Manager):
-    def get_by_natural_key(self, filename, document_page_natural_key):
-        DocumentPage = apps.get_model(
-            app_label='documents', model_name='DocumentPage'
-        )
-        try:
-            document_page = DocumentPage.objects.get_by_natural_key(
-                *document_page_natural_key
-            )
-        except DocumentPage.DoesNotExist:
-            raise self.model.DoesNotExist
-
-        return self.get(document_page__pk=document_page.pk, filename=filename)
-
-
 class DocumentPageManager(models.Manager):
     def get_by_natural_key(self, page_number, document_version_natural_key):
         DocumentVersion = apps.get_model(
diff --git a/mayan/apps/documents/migrations/0048_auto_20181204_1835.py b/mayan/apps/documents/migrations/0048_auto_20181204_1835.py
new file mode 100644
index 0000000000..b96d22ce29
--- /dev/null
+++ b/mayan/apps/documents/migrations/0048_auto_20181204_1835.py
@@ -0,0 +1,31 @@
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+def operation_clear_old_cache(apps, schema_editor):
+    DocumentPageCachedImage = apps.get_model(
+        'documents', 'DocumentPageCachedImage'
+    )
+
+    for cached_image in DocumentPageCachedImage.objects.using(schema_editor.connection.alias).all():
+        # Delete each cached image directly to trigger the physical deletion
+        # of the stored file
+        cached_image.delete()
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('documents', '0047_auto_20180917_0737'),
+    ]
+
+    operations = [
+        migrations.RunPython(code=operation_clear_old_cache),
+        migrations.RemoveField(
+            model_name='documentpagecachedimage',
+            name='document_page',
+        ),
+        migrations.DeleteModel(
+            name='DocumentPageCachedImage',
+        ),
+    ]
diff --git a/mayan/apps/documents/models.py b/mayan/apps/documents/models.py
index 9362ced632..74ad63c9e7 100644
--- a/mayan/apps/documents/models.py
+++ b/mayan/apps/documents/models.py
@@ -39,10 +39,9 @@ from .literals import (
     DEFAULT_DELETE_PERIOD, DEFAULT_DELETE_TIME_UNIT, DOCUMENT_IMAGES_CACHE_NAME
 )
 from .managers import (
-    DocumentManager, DocumentPageCachedImage, DocumentPageManager,
-    DocumentVersionManager, DocumentTypeManager, DuplicatedDocumentManager,
-    FavoriteDocumentManager, PassthroughManager, RecentDocumentManager,
-    TrashCanManager
+    DocumentManager, DocumentPageManager, DocumentVersionManager,
+    DocumentTypeManager, DuplicatedDocumentManager, FavoriteDocumentManager,
+    PassthroughManager, RecentDocumentManager, TrashCanManager
 )
 from .permissions import permission_document_view
 from .settings import (
@@ -972,38 +971,6 @@ class DocumentPage(models.Model):
         return '{}-{}'.format(self.document_version.uuid, self.pk)
 
 
-class DocumentPageCachedImage(models.Model):
-    document_page = models.ForeignKey(
-        on_delete=models.CASCADE, related_name='cached_images',
-        to=DocumentPage, verbose_name=_('Document page')
-    )
-    datetime = models.DateTimeField(
-        auto_now_add=True, db_index=True, verbose_name=_('Date time')
-    )
-    filename = models.CharField(max_length=128, verbose_name=_('Filename'))
-    file_size = models.PositiveIntegerField(
-        db_index=True, default=0, verbose_name=_('File size')
-    )
-
-    objects = DocumentPageCachedImage()
-
-    class Meta:
-        verbose_name = _('Document page cached image')
-        verbose_name_plural = _('Document page cached images')
-
-    #def delete(self, *args, **kwargs):
-    #    storage_documentimagecache.delete(self.filename)
-    #    return super(DocumentPageCachedImage, self).delete(*args, **kwargs)
-
-    def natural_key(self):
-        return (self.filename, self.document_page.natural_key())
-    natural_key.dependencies = ['documents.DocumentPage']
-
-    #def save(self, *args, **kwargs):
-    #    self.file_size = storage_documentimagecache.size(self.filename)
-    #    return super(DocumentPageCachedImage, self).save(*args, **kwargs)
-
-
 class DocumentPageResult(DocumentPage):
     class Meta:
         ordering = ('document_version__document', 'page_number')