diff --git a/How-to-Enable-Dark-Theme.md b/How-to-Enable-Dark-Theme.md
index 4533e03..15d972f 100644
--- a/How-to-Enable-Dark-Theme.md
+++ b/How-to-Enable-Dark-Theme.md
@@ -16,3 +16,6 @@ Manuskript does not come with any **dark themes**, but can use **dark themes** p
 
 _To be done._  
 For now see [PR #630 - Basic dark theme support (Windows 10)](https://github.com/olivierkes/manuskript/pull/630).
+
+## Reference
+- [Issue #388 - [Feature request] Night mode/dark mode](https://github.com/olivierkes/manuskript/issues/388)
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