diff --git a/main/coursecopy/create_backup.php b/main/coursecopy/create_backup.php
index dbc340d552..0c157d1019 100644
--- a/main/coursecopy/create_backup.php
+++ b/main/coursecopy/create_backup.php
@@ -15,8 +15,11 @@ $language_file = array('exercice', 'admin', 'coursebackup');
 // Including the global initialization file
 require_once '../inc/global.inc.php';
 $current_course_tool  = TOOL_COURSE_MAINTENANCE;
+
 api_protect_course_script(true);
 
+api_check_archive_dir();
+
 // Check access rights (only teachers are allowed here)
 if (!api_is_allowed_to_edit()) {
 	api_not_allowed(true);
@@ -48,6 +51,8 @@ require_once 'classes/CourseSelectForm.class.php';
 // Display the tool title
 echo Display::page_header($nameTools);
 
+
+
 /*	MAIN CODE */
 
 if ((isset($_POST['action']) && $_POST['action'] == 'course_select_form') || (isset($_POST['backup_option']) && $_POST['backup_option'] == 'full_backup')) {
diff --git a/main/inc/lib/main_api.lib.php b/main/inc/lib/main_api.lib.php
index f3d4f28d70..76144db355 100644
--- a/main/inc/lib/main_api.lib.php
+++ b/main/inc/lib/main_api.lib.php
@@ -5794,7 +5794,7 @@ function api_resource_is_locked_by_gradebook($item_id, $link_type, $course_code
  * @param string    course code
  * @return boolean 
  */
-function block_course_item_locked_by_gradebook($item_id, $link_type, $course_code = null) {
+function api_block_course_item_locked_by_gradebook($item_id, $link_type, $course_code = null) {
     if (api_is_platform_admin()) {
         return false;
     }
@@ -5805,7 +5805,7 @@ function block_course_item_locked_by_gradebook($item_id, $link_type, $course_cod
     }    
 }
 
-function check_php_version($my_inc_path = null) {
+function api_check_php_version($my_inc_path = null) {
     if (!function_exists('version_compare') || version_compare( phpversion(), REQUIRED_PHP_VERSION, '<')) {
         $global_error_code = 1;
         // Incorrect PHP version
@@ -5815,4 +5815,11 @@ function check_php_version($my_inc_path = null) {
         }
         exit;
     }
+}
+
+function api_check_archive_dir() {
+    if (is_dir(api_get_path(SYS_ARCHIVE_PATH)) && !is_writable(api_get_path(SYS_ARCHIVE_PATH))) {
+        $message = Display::return_message(get_lang('ArchivesDirectoryNotWriteableContactAdmin'),'warning');           
+        api_not_allowed(true, $message);
+    }
 }
\ No newline at end of file