diff --git a/doc/publican/publican.cfg b/doc/publican/publican.cfg
index d950584..0bc8a7e 100644
--- a/doc/publican/publican.cfg
+++ b/doc/publican/publican.cfg
@@ -6,3 +6,4 @@ type: Book
 brand: common
 tmp_dir: Wayland
 toc_section_depth: 1
+chunk_section_depth: 1