diff --git a/pkg/api/dtos/models.go b/pkg/api/dtos/models.go
index a7ff9353fa9..a5e8e74fb46 100644
--- a/pkg/api/dtos/models.go
+++ b/pkg/api/dtos/models.go
@@ -64,7 +64,7 @@ type DataSource struct {
 	BasicAuthPassword string                 `json:"basicAuthPassword"`
 	WithCredentials   bool                   `json:"withCredentials"`
 	IsDefault         bool                   `json:"isDefault"`
-	JsonData          map[string]interface{} `json:"jsonData"`
+	JsonData          map[string]interface{} `json:"jsonData,omitempty"`
 }
 
 type MetricQueryResultDto struct {