diff --git a/python3_sample_project/app/models.py b/python3_sample_project/app/models.py
index ad0b902..72c1874 100644
--- a/python3_sample_project/app/models.py
+++ b/python3_sample_project/app/models.py
@@ -149,4 +149,6 @@ class SelfReferentialCategory(SimpleModel, Sortable):
     child = SortableForeignKey('self', blank=True, null=True)
 
     def __str__(self):
+        if self.child:
+            return '{} - {}'.format(self.child, self.title)
         return self.title
diff --git a/python3_sample_project/database/python3-test-project.sqlite3 b/python3_sample_project/database/python3-test-project.sqlite3
index c086f9d..550f918 100644
Binary files a/python3_sample_project/database/python3-test-project.sqlite3 and b/python3_sample_project/database/python3-test-project.sqlite3 differ