diff --git a/docker-compose/grafana/datasources/prometheus.yaml b/docker-compose/grafana/datasources/prometheus.yaml
index 4fa5401637600c354232afee0585534ce7ab696e..a7872cf77c60ed94f9fb18020b19e1986b495bf4 100644
--- a/docker-compose/grafana/datasources/prometheus.yaml
+++ b/docker-compose/grafana/datasources/prometheus.yaml
@@ -28,7 +28,7 @@ datasources:
     # <bool> enable/disable with credentials headers
     withCredentials:
     # <bool> mark as default datasource. Max one per org
-    isDefault: false
+    isDefault: true
     # <map> fields that will be converted to json and stored in jsonData
     jsonData:
       httpMethod: POST