diff --git a/jupyter-config/jupyter_notebook_config.d/jupyter_openbis_extension.json b/jupyter-config/jupyter_notebook_config.d/jupyter_openbis_extension.json
index 422db2e1bd5950ec3611d4d5f3b6ef996a6dff80..501e38c9704dcd0325c7fa818d07a68d51e1873f 100644
--- a/jupyter-config/jupyter_notebook_config.d/jupyter_openbis_extension.json
+++ b/jupyter-config/jupyter_notebook_config.d/jupyter_openbis_extension.json
@@ -1,7 +1,7 @@
 {
   "NotebookApp": {
     "nbserver_extensions": {
-      "jupyter-openbis-extension.server": true,
+      "jupyter-openbis-extension.server": true
     }
   }
 }