diff --git a/public/app/features/datasources/state/actions.ts b/public/app/features/datasources/state/actions.ts
index 7f7585a323a..7a09899fe5b 100644
--- a/public/app/features/datasources/state/actions.ts
+++ b/public/app/features/datasources/state/actions.ts
@@ -277,7 +277,7 @@ export function updateDataSource(dataSource: DataSourceSettings) {
 
       dispatch(testDataSourceFailed(formattedError));
 
-      return Promise.reject(dataSource);
+      return Promise.reject(err);
     }
 
     await getDatasourceSrv().reload();