diff --git a/modules/core/docs/authproc_languageadaptor.md b/modules/core/docs/authproc_languageadaptor.md
index 1464b0540fd36905a3a5e485f065bd4d079d05f0..c6d681db8d651649c4b5788b1e39072ba63e5fe0 100644
--- a/modules/core/docs/authproc_languageadaptor.md
+++ b/modules/core/docs/authproc_languageadaptor.md
@@ -37,6 +37,6 @@ Custon attribute:
     'authproc' => array(
         50 => array(
             'class' => 'core:LanguageAdaptor',
-	    'attributename' => 'lang',
+            'attributename' => 'lang',
         ),
     ),