diff --git a/src/panels/corpglory-dataexporter-panel/components/Panel.tsx b/src/panels/corpglory-dataexporter-panel/components/Panel.tsx
index 3455776..b89828d 100644
--- a/src/panels/corpglory-dataexporter-panel/components/Panel.tsx
+++ b/src/panels/corpglory-dataexporter-panel/components/Panel.tsx
@@ -43,7 +43,7 @@ export function Panel({ options, data, width, height, timeRange, onChangeTimeRan
       const refId = queries[0].refId;
       const rawSql = queries[0].rawSql;
       const uid = queries[0].datasource.uid;
-
+      // TODO: it works only with sql (rawSql will be empty in prometheus)
       const isDatasourceExist = _.some(
         datasources,
         (ds: DatasourceTableRowConfig) =>
@@ -52,7 +52,6 @@ export function Panel({ options, data, width, height, timeRange, onChangeTimeRan
       if (isDatasourceExist) {
         return;
       }
-
       const newConfig = createDatasourceConfig({ datasource, refId, rawSql, uid }, timestampRange);
       setDatasources([...datasources, newConfig]);
     },