diff --git a/lisp/init-base.el b/lisp/init-base.el
index 8f5b4eb..6d7192b 100644
--- a/lisp/init-base.el
+++ b/lisp/init-base.el
@@ -402,7 +402,9 @@ Else, call `comment-or-uncomment-region' on the current line."
 
 ;; Buffer index
 (use-package imenu
-  :hook (imenu-after-jump . recenter))
+  :hook (imenu-after-jump . recenter)
+  :custom
+  (imenu-flatten 'group))
 
 ;; Needed by `webpaste'
 (use-package browse-url