diff --git a/config/src/main/java/com/google/firebase/samples/config/Configure.java b/config/src/main/java/com/google/firebase/samples/config/Configure.java
index 09663e5..f22f36b 100644
--- a/config/src/main/java/com/google/firebase/samples/config/Configure.java
+++ b/config/src/main/java/com/google/firebase/samples/config/Configure.java
@@ -15,6 +15,7 @@
 import java.io.PrintWriter;
 import java.net.HttpURLConnection;
 import java.net.URL;
+import java.util.Arrays;
 import java.util.Collections;
 import java.util.Scanner;
 import java.util.zip.GZIPInputStream;
@@ -28,7 +29,7 @@ public class Configure {
   private final static String PROJECT_ID = "<YOUR-PROJECT-ID>";
   private final static String BASE_URL = "https://firebaseremoteconfig.googleapis.com";
   private final static String REMOTE_CONFIG_ENDPOINT = "/v1/projects/" + PROJECT_ID + "/remoteConfig";
-  private final static String REMOTE_CONFIG_SCOPE = "https://www.googleapis.com/auth/firebase.remoteconfig";
+  private final static String[] SCOPES = { "https://www.googleapis.com/auth/firebase.remoteconfig" };
 
   /**
    * Retrieve a valid access token that can be use to authorize requests to the Remote Config REST
@@ -37,13 +38,15 @@ public class Configure {
    * @return Access token.
    * @throws IOException
    */
+  // [START retrieve_access_token]
   private static String getAccessToken() throws IOException {
     GoogleCredential googleCredential = GoogleCredential
         .fromStream(new FileInputStream("service-account.json"))
-        .createScoped(Collections.singleton(REMOTE_CONFIG_SCOPE));
+        .createScoped(Arrays.asList(SCOPES));
     googleCredential.refreshToken();
     return googleCredential.getAccessToken();
   }
+  // [END retrieve_access_token]
 
   /**
    * Get current Firebase Remote Config template from server and store it locally.