diff --git a/public/app/core/services/backend_srv.ts b/public/app/core/services/backend_srv.ts
index 1a181f03d1b..eb4409bd3af 100644
--- a/public/app/core/services/backend_srv.ts
+++ b/public/app/core/services/backend_srv.ts
@@ -559,7 +559,7 @@ export class BackendSrv implements BackendService {
       })),
       catchError(err => {
         if (!err.cancelled) {
-          throwError(err);
+          return throwError(err);
         }
 
         if (resultType === CancellationType.dataSourceRequest) {