diff --git a/main/inc/lib/fileUpload.lib.php b/main/inc/lib/fileUpload.lib.php
index 3ddf33cfec..11cae86237 100755
--- a/main/inc/lib/fileUpload.lib.php
+++ b/main/inc/lib/fileUpload.lib.php
@@ -1223,8 +1223,8 @@ function add_document(
     $c_id = $_course['real_id'];
 
     $table_document = Database::get_course_table(TABLE_DOCUMENT);
-    $sql = "INSERT INTO $table_document (c_id, path, filetype, size, title, comment, readonly, session_id)
-	        VALUES ($c_id, '$path','$filetype','$filesize','$title', '$comment', $readonly, $session_id)";
+    $sql = "INSERT INTO $table_document (id, c_id, path, filetype, size, title, comment, readonly, session_id)
+	        VALUES (null, $c_id, '$path','$filetype','$filesize','$title', '$comment', $readonly, $session_id)";
 
     if (Database::query($sql)) {
         $documentId = Database::insert_id();