diff --git a/book.json b/book.json
index ff4653fb7c..aaf7386316 100755
--- a/book.json
+++ b/book.json
@@ -60,7 +60,7 @@
     "adminguide": {
       "name": "Keycloak Adminstration Guide",
       "link": "https://keycloak.gitbooks.io/server-adminstration-guide/content/"
-    }
+    },
     "project": {
       "name": "Keycloak",
       "version": "1.9.3.Final-SNAPSHOT"