diff --git a/htdocs/admin/ihm.php b/htdocs/admin/ihm.php
index 60f55292df7..10f3d009b13 100644
--- a/htdocs/admin/ihm.php
+++ b/htdocs/admin/ihm.php
@@ -53,6 +53,7 @@ if (isset($_POST["action"]) && $_POST["action"] == 'update')
 	dolibarr_set_const($db, "MAIN_MULTILANGS",         $_POST["main_multilangs"]);
 	dolibarr_set_const($db, "MAIN_SIZE_LISTE_LIMIT",   $_POST["main_size_liste_limit"]);
 	dolibarr_set_const($db, "MAIN_DISABLE_JAVASCRIPT", $_POST["disable_javascript"]);
+	dolibarr_set_const($db, "MAIN_DISABLE_AJAX",       $_POST["disable_ajax"]);
 	dolibarr_set_const($db, "MAIN_POPUP_CALENDAR",     $_POST["popup_calendar"]);
 	
 	dolibarr_set_const($db, "MAIN_SHOW_BUGTRACK_LINK", $_POST["bugtrack"]);
@@ -128,6 +129,12 @@ if (isset($_GET["action"]) && $_GET["action"] == 'edit')
     $html->selectyesnonum('disable_javascript',$conf->global->MAIN_DISABLE_JAVASCRIPT);
     print '</td></tr>';
     
+    // Désactiver ajax
+    $var=!$var;
+    print '<tr '.$bc[$var].'"><td width="35%">'.$langs->trans("DisableAjax").'</td><td>';
+    $html->selectyesnonum('disable_ajax',$conf->global->MAIN_DISABLE_AJAX);
+    print '</td></tr>';
+    
     // Désactiver le calendrier popup
     $var=!$var;
     print '<tr '.$bc[$var].'"><td width="35%">'.$langs->trans("UsePopupCalendar").'</td><td>';
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 7a2fa5c1bd8..8b2218ca991 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -15,6 +15,7 @@ GUISetup=Display
 ErrorModuleRequirePHPVersion=Error, this module require PHP version %s or higher
 DictionnarySetup=Dictionnary setup
 DisableJavascript=Disable javascript functions
+DisableAjax=Disable ajax functions
 JavascriptDisabled=Javascript disabled
 UsePopupCalendar=Use popup for dates input
 NextValue=Next value
diff --git a/htdocs/langs/fr_FR/admin.lang b/htdocs/langs/fr_FR/admin.lang
index cef97cb55ff..cb939a0e7ee 100644
--- a/htdocs/langs/fr_FR/admin.lang
+++ b/htdocs/langs/fr_FR/admin.lang
@@ -15,6 +15,7 @@ GUISetup=Affichage
 ErrorModuleRequirePHPVersion=Erreur, ce module requiert une version %s ou supérieure de PHP
 DictionnarySetup=Dictionnaires
 DisableJavascript=Désactiver les fonctions javascript
+DisableAjax=Désactiver les fonctions ajax
 JavascriptDisabled=Javascript désactivé
 UsePopupCalendar=Utiliser les popups pour la saisie des dates
 NextValue=Prochaine valeur