diff --git a/l3config.js b/l3config.js
index 48ed7f8..f642d5a 100644
--- a/l3config.js
+++ b/l3config.js
@@ -262,7 +262,7 @@ function initForm() {
 	}));
 
 	form.replaceChildren(...l3cfg.node())
-	renderConfig(l3cfg.sections.map(section => section.render()).filter(section => !!section));
+	renderConfig(l3cfg.sections.flatMap(section => section.render()).filter(section => !!section));
 }
 
 function renderConfigOption(name, value) {