diff --git a/staging/native/src/android/google_signin.cc b/staging/native/src/android/google_signin.cc
index bf54f4b3..f266d402 100644
--- a/staging/native/src/android/google_signin.cc
+++ b/staging/native/src/android/google_signin.cc
@@ -223,10 +223,6 @@ void GoogleSignIn::GoogleSignInImpl::Configure(
   delete current_configuration_;
   current_configuration_ = new Configuration(configuration);
 
-  if (configuration.web_client_id) {
-    current_configuration_->web_client_id = strdup(configuration.web_client_id);
-  }
-
   delete current_result_;
   current_result_ = new GoogleSignInFuture();
 
@@ -241,26 +237,24 @@ void GoogleSignIn::GoogleSignInImpl::CallConfigure() {
     return;
   }
   jstring j_web_client_id =
-      current_configuration_->web_client_id
-          ? env->NewStringUTF(current_configuration_->web_client_id)
-          : nullptr;
+      current_configuration_->web_client_id.empty() ? nullptr
+          : env->NewStringUTF(current_configuration_->web_client_id.c_str());
 
   jstring j_account_name =
-      current_configuration_->account_name
-          ? env->NewStringUTF(current_configuration_->account_name)
-          : nullptr;
+      current_configuration_->account_name.empty() ? nullptr
+          : env->NewStringUTF(current_configuration_->account_name.c_str());
 
   jobjectArray j_auth_scopes = nullptr;
 
-  if (current_configuration_->additional_scope_count > 0) {
+  if (current_configuration_->additional_scopes.size() > 0) {
     jclass string_clazz = jni_.FindClass("java/lang/String");
     j_auth_scopes = env->NewObjectArray(
-        current_configuration_->additional_scope_count, string_clazz, nullptr);
+        current_configuration_->additional_scopes.size(), string_clazz, nullptr);
 
-    for (int i = 0; i < current_configuration_->additional_scope_count; i++) {
+    for (int i = 0; i < current_configuration_->additional_scopes.size(); i++) {
       env->SetObjectArrayElement(
           j_auth_scopes, i,
-          env->NewStringUTF(current_configuration_->additional_scopes[i]));
+          env->NewStringUTF(current_configuration_->additional_scopes[i].c_str()));
     }
     env->DeleteLocalRef(string_clazz);
   }
diff --git a/staging/native/src/include/google_signin.h b/staging/native/src/include/google_signin.h
index 9b97edf0..abd45072 100644
--- a/staging/native/src/include/google_signin.h
+++ b/staging/native/src/include/google_signin.h
@@ -15,6 +15,9 @@
 #ifndef GOOGLE_SIGNIN_GOOGLESIGNIN_H  // NOLINT
 #define GOOGLE_SIGNIN_GOOGLESIGNIN_H
 
+#include <string>
+#include <vector>
+
 #include "future.h"              // NOLINT
 #include "google_signin_user.h"  // NOLINT
 
@@ -91,7 +94,7 @@ class GoogleSignIn {
     /// games signing only works on Android.
     bool use_game_signin;
     /// Web client id associated with this app.
-    const char *web_client_id;
+    std::string web_client_id;
     /// true for getting an auth code when authenticating.
     /// Note: This may trigger re-consent on iOS.  Ideally, this
     /// is set to true once, and the result sent to the server where the
@@ -108,9 +111,9 @@ class GoogleSignIn {
     /// recommended for VR applications.
     bool hide_ui_popups;
     /// account name to use when authenticating, null indicates use default.
-    const char *account_name;
+    std::string account_name;
     /// additional scopes to request, requires consent.
-    const char **additional_scopes;
+    std::vector<std::string> additional_scopes;
     int additional_scope_count;
 
     Configuration(Configuration const &copy) = default;