diff --git a/components/net/http_loader.rs b/components/net/http_loader.rs
index d1e0bef10687..3d231423f93a 100644
--- a/components/net/http_loader.rs
+++ b/components/net/http_loader.rs
@@ -513,6 +513,7 @@ fn request_must_be_secured(url: &Url, hsts_list: &Arc<RwLock<HSTSList>>) -> bool
 }
 
 pub fn modify_request_headers(headers: &mut Headers,
+                              url: &Url,
                               doc_url: &Url,
                               user_agent: &str,
                               cookie_jar: &Arc<RwLock<CookieStorage>>,
@@ -529,7 +530,7 @@ pub fn modify_request_headers(headers: &mut Headers,
     set_default_accept_encoding(headers);
     // https://fetch.spec.whatwg.org/#concept-http-network-or-cache-fetch step 11
     if load_data.credentials_flag {
-        set_request_cookies(doc_url.clone(), headers, cookie_jar);
+        set_request_cookies(url.clone(), headers, cookie_jar);
 
         // https://fetch.spec.whatwg.org/#http-network-or-cache-fetch step 12
         if !headers.has::<Authorization<Basic>>() {
@@ -725,7 +726,7 @@ pub fn load<A>(load_data: LoadData,
 
         let request_id = uuid::Uuid::new_v4().to_simple_string();
 
-        modify_request_headers(&mut request_headers, &doc_url, &user_agent, &cookie_jar, &load_data);
+        modify_request_headers(&mut request_headers, &url, &doc_url, &user_agent, &cookie_jar, &load_data);
 
         let response = try!(obtain_response(request_factory, &url, &method, &request_headers,
                                             &cancel_listener, &load_data.data, &load_data.method,
diff --git a/tests/unit/net/http_loader.rs b/tests/unit/net/http_loader.rs
index 70d4944b7ae1..c144e4bd3a8a 100644
--- a/tests/unit/net/http_loader.rs
+++ b/tests/unit/net/http_loader.rs
@@ -18,10 +18,10 @@ use hyper::status::StatusCode;
 use msg::constellation_msg::PipelineId;
 use net::cookie::Cookie;
 use net::cookie_storage::CookieStorage;
-use net::hsts::{HSTSList};
+use net::hsts::{HSTSList, HSTSEntry};
 use net::http_loader::{load, LoadError, HttpRequestFactory, HttpRequest, HttpResponse};
 use net::resource_thread::CancellationListener;
-use net_traits::{LoadData, CookieSource, LoadContext};
+use net_traits::{LoadData, CookieSource, LoadContext, IncludeSubdomains};
 use std::borrow::Cow;
 use std::io::{self, Write, Read, Cursor};
 use std::sync::mpsc::Receiver;
@@ -813,6 +813,50 @@ fn test_load_sets_requests_cookies_header_for_url_by_getting_cookies_from_the_re
                                                     &CancellationListener::new(None));
 }
 
+#[test]
+fn test_load_sends_secure_cookie_if_http_changed_to_https_due_to_entry_in_hsts_store() {
+    let url = url!("http://mozilla.com");
+    let secured_url = url!("https://mozilla.com");
+
+    let hsts_list = Arc::new(RwLock::new(HSTSList::new()));
+    let cookie_jar = Arc::new(RwLock::new(CookieStorage::new()));
+
+    {
+        let mut hsts_list = hsts_list.write().unwrap();
+        let entry = HSTSEntry::new(
+            "mozilla.com".to_owned(), IncludeSubdomains::Included, Some(1000000)
+        ).unwrap();
+        hsts_list.push(entry);
+    }
+
+    {
+        let mut cookie_jar = cookie_jar.write().unwrap();
+        let cookie_url = secured_url.clone();
+        let mut cookie_pair = CookiePair::new("mozillaIs".to_owned(), "theBest".to_owned());
+        cookie_pair.secure = true;
+
+        let cookie = Cookie::new_wrapped(
+            cookie_pair,
+            &cookie_url,
+            CookieSource::NonHTTP
+        ).unwrap();
+        cookie_jar.push(cookie, CookieSource::HTTP);
+    }
+
+    let mut load_data = LoadData::new(LoadContext::Browsing, url, None);
+    load_data.data = Some(<[_]>::to_vec("Yay!".as_bytes()));
+
+    let mut headers = Headers::new();
+    headers.set_raw("Cookie".to_owned(), vec![<[_]>::to_vec("mozillaIs=theBest".as_bytes())]);
+
+    let _ = load::<AssertRequestMustIncludeHeaders>(
+        load_data.clone(), hsts_list, cookie_jar, None,
+        &AssertMustIncludeHeadersRequestFactory {
+            expected_headers: headers,
+            body: <[_]>::to_vec(&*load_data.data.unwrap())
+        }, DEFAULT_USER_AGENT.to_owned(), &CancellationListener::new(None));
+}
+
 #[test]
 fn test_load_sends_cookie_if_nonhttp() {
     let url = url!("http://mozilla.com");