diff --git a/devenv/datasources.yaml b/devenv/datasources.yaml
index abf0494225c..2a4a3f24a1b 100644
--- a/devenv/datasources.yaml
+++ b/devenv/datasources.yaml
@@ -71,6 +71,7 @@ datasources:
 
   - name: gdev-testdata
     isDefault: true
+    uid: gdev-testdata
     type: testdata
 
   - name: gdev-influxdb1-influxql