diff --git a/lxc-apps/opendatakit/app b/lxc-apps/opendatakit/app
index 1c93ee5..97654d8 100644
--- a/lxc-apps/opendatakit/app
+++ b/lxc-apps/opendatakit/app
@@ -24,7 +24,7 @@
                 "opendatakit-postgres"
             ],
             "mounts": {
-                "opendatakit/odkbuild_conf/add-ca-cert.env": "srv/opendatakit-build/add-ca-cert.env:file"
+                "opendatakit/odkbuild_conf/add-ca-cert.env": "srv/opendatakit-build/add-ca-cert.env:file",
                 "opendatakit/odkbuild_conf/config.yml": "srv/opendatakit-build/config.yml:file"
             }
         },