diff --git a/securityquiz/settings.py b/securityquiz/settings.py
index b0e2dfe..dbada92 100644
--- a/securityquiz/settings.py
+++ b/securityquiz/settings.py
@@ -28,7 +28,7 @@ if 'runserver' in sys.argv:
     DEBUG = True
     TEMPLATE_DEBUG = True
 
-ALLOWED_HOSTS = []
+ALLOWED_HOSTS = ['security.aardappelschilmesje.nl']
 
 
 # Application definition
diff --git a/templates/500.html b/templates/500.html
new file mode 100644
index 0000000..2b452eb
--- /dev/null
+++ b/templates/500.html
@@ -0,0 +1 @@
+Internal Server Error