diff --git a/public/app/plugins/datasource/elasticsearch/elastic_response.ts b/public/app/plugins/datasource/elasticsearch/elastic_response.ts
index c690cf8491a..06570e9923e 100644
--- a/public/app/plugins/datasource/elasticsearch/elastic_response.ts
+++ b/public/app/plugins/datasource/elasticsearch/elastic_response.ts
@@ -390,7 +390,7 @@ export class ElasticResponse {
     return result;
   }
 
-  getTimeSeries(): DataQueryResponse {
+  getTimeSeries() {
     if (this.targets.some(target => target.metrics.some(metric => metric.type === 'raw_document_v2'))) {
       return this.processResponseToDataFrames(false);
     }