diff --git a/src/lib/query/shared/query.service.ts b/src/lib/query/shared/query.service.ts
index 64c435235d..9853edbbeb 100644
--- a/src/lib/query/shared/query.service.ts
+++ b/src/lib/query/shared/query.service.ts
@@ -1,5 +1,5 @@
 import { Injectable } from '@angular/core';
-import { Response } from '@angular/http';
+import { URLSearchParams, Response } from '@angular/http';
 import { Subscription } from 'rxjs/Subscription';
 
 import { uuid } from '../../utils/uuid';