diff --git a/lib/wabanex/prom_ex.ex b/lib/wabanex/prom_ex.ex
index ba5def6..d72f25c 100644
--- a/lib/wabanex/prom_ex.ex
+++ b/lib/wabanex/prom_ex.ex
@@ -77,7 +77,7 @@ defmodule Wabanex.PromEx do
   @impl true
   def dashboard_assigns do
     [
-      datasource_id: "WABANEX_SERVICE",
+      datasource_id: "prometheus",
       default_selected_interval: "30s"
     ]
   end