diff --git a/mbedtls/src/rng/mod.rs b/mbedtls/src/rng/mod.rs
index 264613241..bd512b3a3 100644
--- a/mbedtls/src/rng/mod.rs
+++ b/mbedtls/src/rng/mod.rs
@@ -45,7 +45,7 @@ pub unsafe extern "C" fn mbedtls_psa_external_get_random(
     _user_data: *mut mbedtls_sys::types::raw_types::c_void,
     data: *mut c_uchar,
     len: size_t,
-    olen: * mut size_t) -> mbedtls_sys::types::int32_t {
-    olen = &mut len as * mut size_t;
+    _olen: * mut size_t) -> mbedtls_sys::types::int32_t {
+    _olen = &mut len as * mut size_t;
     self::rdrand::rng_call(data, len)
 }
\ No newline at end of file
diff --git a/mbedtls/tests/hyper.rs b/mbedtls/tests/hyper.rs
index cf5686ec0..4040ddf30 100644
--- a/mbedtls/tests/hyper.rs
+++ b/mbedtls/tests/hyper.rs
@@ -268,13 +268,13 @@ mod tests {
         let ssl = MbedSSLClient::new(Arc::new(config), true);
 
         let client1 = hyper::Client::with_connector(Pool::with_connector(Default::default(), HttpsConnector::new(ssl.clone())));
-        request_with_retry(client1.into(), "https://www.google.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
+        request_with_retry(client1.into(), "https://cloud.google.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
 
         let client2 = hyper::Client::with_connector(Pool::with_connector(Default::default(), HttpsConnector::new(ssl.clone())));
-        request_with_retry(client2.into(), "https://www.google.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
+        request_with_retry(client2.into(), "https://www.youtube.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
 
         let client3 = hyper::Client::with_connector(Pool::with_connector(Default::default(), HttpsConnector::new(ssl.clone())));
-        request_with_retry(client3.into(), "https://www.google.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
+        request_with_retry(client3.into(), "https://www.android.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
     }
 
     #[test_case(0, test_name="test_hyper_multithread_tls1_2")]
@@ -303,11 +303,11 @@ mod tests {
         let clone1 = client.clone();
         let clone2 = client.clone();
         let t1 = std::thread::spawn(move || {
-            request_with_retry(clone1, "https://www.google.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
+            request_with_retry(clone1, "https://www.android.com/", None, hyper::status::StatusCode::Ok, OUTBOUND_REQUEST_RETRY_TIMES);
         });
 
         let t2 = std::thread::spawn(move || {
-            let response = clone2.post("https://google.com").body("foo=bar").send().unwrap();
+            let response = clone2.post("https://www.google.com").body("foo=bar").send().unwrap();
             assert_eq!(response.status, hyper::status::StatusCode::MethodNotAllowed);
         });