diff --git a/tests/unit/net/fetch.rs b/tests/unit/net/fetch.rs
index ee6f425cd51..b2047056253 100644
--- a/tests/unit/net/fetch.rs
+++ b/tests/unit/net/fetch.rs
@@ -7,6 +7,7 @@ use devtools_traits::DevtoolsControlMsg;
 use devtools_traits::HttpRequest as DevtoolsHttpRequest;
 use devtools_traits::HttpResponse as DevtoolsHttpResponse;
 use fetch_with_context;
+use fetch_with_cors_cache;
 use http_loader::{expect_devtools_http_request, expect_devtools_http_response};
 use hyper::LanguageTag;
 use hyper::header::{Accept, AccessControlAllowCredentials, AccessControlAllowHeaders, AccessControlAllowOrigin};
@@ -22,7 +23,6 @@ use hyper::status::StatusCode;
 use hyper::uri::RequestUri;
 use msg::constellation_msg::TEST_PIPELINE_ID;
 use net::fetch::cors_cache::CorsCache;
-use net::fetch::methods::fetch_with_cors_cache;
 use net_traits::ReferrerPolicy;
 use net_traits::request::{Origin, RedirectMode, Referrer, Request, RequestMode};
 use net_traits::response::{CacheState, Response, ResponseBody, ResponseType};
@@ -250,10 +250,8 @@ fn test_cors_preflight_cache_fetch() {
     let wrapped_request0 = Rc::new(request.clone());
     let wrapped_request1 = Rc::new(request);
 
-    let fetch_response0 = fetch_with_cors_cache(wrapped_request0.clone(), &mut cache,
-                                                &mut None, &new_fetch_context(None));
-    let fetch_response1 = fetch_with_cors_cache(wrapped_request1.clone(), &mut cache,
-                                                &mut None, &new_fetch_context(None));
+    let fetch_response0 = fetch_with_cors_cache(wrapped_request0.clone(), &mut cache);
+    let fetch_response1 = fetch_with_cors_cache(wrapped_request1.clone(), &mut cache);
     let _ = server.close();
 
     assert!(!fetch_response0.is_network_error() && !fetch_response1.is_network_error());
diff --git a/tests/unit/net/lib.rs b/tests/unit/net/lib.rs
index 1f35c2fda3a..c698145a074 100644
--- a/tests/unit/net/lib.rs
+++ b/tests/unit/net/lib.rs
@@ -36,6 +36,7 @@ extern crate url;
 
 use devtools_traits::DevtoolsControlMsg;
 use hyper::server::{Handler, Listening, Server};
+use net::fetch::cors_cache::CorsCache;
 use net::fetch::methods::{self, FetchContext};
 use net::filemanager_thread::FileManager;
 use net::test::HttpState;
@@ -86,6 +87,17 @@ fn fetch_with_context(request: Request, context: &FetchContext) -> Response {
     receiver.recv().unwrap()
 }
 
+fn fetch_with_cors_cache(request: Rc<Request>, cache: &mut CorsCache) -> Response {
+    let (sender, receiver) = channel();
+    let target = Box::new(FetchResponseCollector {
+        sender: sender,
+    });
+
+    methods::fetch_with_cors_cache(request, cache, &mut Some(target), &new_fetch_context(None));
+
+    receiver.recv().unwrap()
+}
+
 fn make_server<H: Handler + 'static>(handler: H) -> (Listening, ServoUrl) {
     // this is a Listening server because of handle_threads()
     let server = Server::http("0.0.0.0:0").unwrap().handle_threads(handler, 1).unwrap();