diff --git a/admin_interface/models.py b/admin_interface/models.py
index 52b779f..f46ecbb 100644
--- a/admin_interface/models.py
+++ b/admin_interface/models.py
@@ -107,7 +107,7 @@ class Theme(models.Model):
 
     def set_default_logo(self):
 
-        if self.logo and os.path.isfile(self.logo.url):
+        if self.logo and os.path.isfile(self.logo.path):
             return
 
         logo_filename = 'logo-django.svg'
diff --git a/tests/tests.py b/tests/tests.py
index 3ae922e..572b437 100644
--- a/tests/tests.py
+++ b/tests/tests.py
@@ -66,6 +66,24 @@ class AdminInterfaceTestCase(TestCase):
         Theme.objects.filter( pk = Theme.get_active_theme().pk ).delete()
         self.assertEqual( Theme.get_active_theme().pk, 1 )
 
+    def test_default_theme_logo_created_if_deleted(self):
+
+        Theme.objects.all().delete()
+        theme = Theme.get_active_theme()
+        theme.logo = ''
+        theme.save()
+        theme = Theme.get_active_theme()
+        self.assertNotEqual( theme.logo, None )
+
+    def test_default_theme_logo_not_created_if_not_deleted(self):
+
+        Theme.objects.all().delete()
+        theme = Theme.get_active_theme()
+        self.assertNotEqual( theme.logo, None )
+        logo_url = theme.logo.url
+        theme = Theme.get_active_theme()
+        self.assertEqual( theme.logo.url, logo_url )
+
     def test_last_theme_activated_on_multiple_themes_created(self):
 
         Theme.objects.all().delete()