diff --git a/examples/drive_example/src/main.rs b/examples/drive_example/src/main.rs
index 5984ce9..1cb8180 100644
--- a/examples/drive_example/src/main.rs
+++ b/examples/drive_example/src/main.rs
@@ -34,7 +34,7 @@ fn main() {
     let authenticator = Authenticator::new(&secret,
                                            DefaultAuthenticatorDelegate,
                                            client,
-                                           DiskTokenStorage::new("token_store.json")
+                                           DiskTokenStorage::new(&"token_store.json".to_string())
                                                .unwrap(),
                                            Some(FlowType::InstalledInteractive));
     let client = hyper::Client::with_connector(
diff --git a/examples/service_account/src/main.rs b/examples/service_account/src/main.rs
index e849477..99afa4a 100644
--- a/examples/service_account/src/main.rs
+++ b/examples/service_account/src/main.rs
@@ -165,7 +165,7 @@ fn publish_stuff(methods: &PubsubMethods, message: &str) {
 // If called as '.../service_account pub', act as publisher; if called as '.../service_account
 // sub', act as subscriber.
 fn main() {
-    let client_secret = oauth::service_account_key_from_file("pubsub-auth.json")
+    let client_secret = oauth::service_account_key_from_file(&"pubsub-auth.json".to_string())
         .unwrap();
     let client = hyper::Client::with_connector(HttpsConnector::new(NativeTlsClient::new().unwrap()));
     let mut access = oauth::ServiceAccountAccess::new(client_secret, client);