diff --git a/init.el b/init.el
index b8b49df..9868397 100644
--- a/init.el
+++ b/init.el
@@ -2748,6 +2748,10 @@ With given ARG, display files in `db/important-document-path’."
 
 (use-package semantic
   :commands (semantic-mode)
+  :init (setq semantic-default-submodes
+              '(global-semantic-idle-scheduler-mode
+                global-semanticdb-minor-mode
+                global-semantic-idle-summary-mode))
   :config (progn
             (require 'semantic/ia)
             (require 'semantic/bovine/el)