diff --git a/config.toml b/config.toml
index 3dc795d..4d794e4 100644
--- a/config.toml
+++ b/config.toml
@@ -23,6 +23,7 @@ enableRobotsTXT = false
     toc = true
     post_navigation = true
     mainSections = [
+        "secu_systeme",
         "conception_formelle",
         "secu_logicielle",
         "bdd_avancees",