diff --git a/init.org b/init.org
index 691c195..187818f 100644
--- a/init.org
+++ b/init.org
@@ -303,15 +303,22 @@ Some windows specific stuff
                                  MY--PATH_ORG_FILES_MOBILE)
           org-id-locations-file (concat MY--PATH_USER_LOCAL ".org-id-locations")
           org-log-into-drawer "LOGBOOK")
-  
+
     ;; some display customizations
     (setq org-pretty-entities t
           org-startup-truncated t
           org-startup-align-all-tables t)
 
-    (setq org-src-window-setup 'current-window)) ;; C-c ' opens in current window
+    ;; some source code blocks customizations
+    (setq org-src-window-setup 'current-window ;; C-c ' opens in current window
+          org-src-fontify-natively t ;; use syntax highlighting in code blocks
+          org-src-preserve-indentation t ;; no extra indentation
+          org-src-tab-acts-natively t))
 #+END_SRC
 ** languages
+   :PROPERTIES:
+   :ID:       467efd58-e928-4ccf-9ac4-d144eaede8ed
+   :END:
 #+BEGIN_SRC emacs-lisp
   (org-babel-do-load-languages
    'org-babel-load-languages