diff --git a/source/_integrations/demo.markdown b/source/_integrations/demo.markdown
index 714074607ce..824323274a8 100644
--- a/source/_integrations/demo.markdown
+++ b/source/_integrations/demo.markdown
@@ -8,6 +8,7 @@ ha_quality_scale: internal
 ha_codeowners:
   - '@home-assistant/core'
 ha_domain: demo
+ha_iot_class: Calculated
 ---
 
 The `demo` platform allows you to use integrations which are providing a demo of their implementation. The demo entities are dummies but show you how the actual platform looks like. This way you can run own demonstration instance like the online [Home Assistant demo](/demo/)but combined with your own real/functional platforms.