diff --git a/book.json b/book.json
index 83b0159..420389a 100644
--- a/book.json
+++ b/book.json
@@ -5,6 +5,8 @@
     "pluginsConfig": {
         "autocover": {
             "title": "User guide of MISP Malware Information Sharing Platform, a Threat Sharing Platform.",
+            "description": "User guide of MISP Malware Information Sharing Platform, a Threat Sharing Platform.",
+            "language": "en",
             "author": "MISP Contributors",
             "font": {
                 "size": null,