diff --git a/settings/pre-settings.el b/settings/pre-settings.el
index 3e4ef157..d94e5efe 100644
--- a/settings/pre-settings.el
+++ b/settings/pre-settings.el
@@ -22,6 +22,9 @@
              (format "%.2f seconds" (float-time (time-subtract after-init-time before-init-time)))
              gcs-done)))
 
+;; omit warnings like: /opt/emacs-conf/lisp/org/oc-basic.el: Warning: ‘buffer-substring’ is an obsolete generalized variable.
+(setq byte-compile-warnings nil)
+
 (require 'use-package)                             ;; requires bind-key
 (setq use-package-verbose t)
 (setq use-package-compute-statistics t)