diff --git a/docs/DesignDocs/DebugMode.rst b/docs/DesignDocs/DebugMode.rst
index 166c733e6..3b997d446 100644
--- a/docs/DesignDocs/DebugMode.rst
+++ b/docs/DesignDocs/DebugMode.rst
@@ -3,7 +3,7 @@ Debug Mode
 ==========
 
 .. contents::
-   :local
+   :local:
 
 .. _using-debug-mode: