diff --git a/dashboards/globals/defaults.libsonnet b/dashboards/globals/defaults.libsonnet
index 5e4dae4..cfddc13 100644
--- a/dashboards/globals/defaults.libsonnet
+++ b/dashboards/globals/defaults.libsonnet
@@ -6,5 +6,5 @@
     timeTo: 'now',
     refresh: '1m',
   },
-  datasource: if std.extVar('publish') then '${DS_PROMETHEUS}' else 'Prometheus',
+  datasource: std.extVar('datasource'),
 }