diff --git a/doc/MODULE_DESIGN.org b/doc/MODULE_DESIGN.org
index 25ae8e9..e87370e 100644
--- a/doc/MODULE_DESIGN.org
+++ b/doc/MODULE_DESIGN.org
@@ -54,7 +54,7 @@ Not all HPI Modules are currently at that level of complexity -- some are simple
 
 A related concern is [[*An Extendable module structure][how to structure namespace packages]] to allow users to easily extend them, and how this conflicts with single file modules. If a module is converted from a single file module to a namespace with multiple files, it seems this is a breaking change, see [[https://github.com/karlicoss/HPI/issues/89][#89]] for an example of this.
 
-#+html <div id="addingmodules"></div>
+#+html: <div id="addingmodules"></div>
 
 * Adding new modules