diff --git a/vpn_provider.cc b/vpn_provider.cc
index 77f066f..0e2474b 100644
--- a/vpn_provider.cc
+++ b/vpn_provider.cc
@@ -39,8 +39,8 @@
 
 void VPNProvider::Stop() {}
 
-VPNServiceRefPtr VPNProvider::GetService(const KeyValueStore &args,
-                                         Error *error) {
+ServiceRefPtr VPNProvider::GetService(const KeyValueStore &args,
+                                      Error *error) {
   SLOG(VPN, 2) << __func__;
   string type = args.LookupString(flimflam::kProviderTypeProperty, "");
   if (type.empty()) {
@@ -92,7 +92,7 @@
   }
 }
 
-void VPNProvider::CreateServicesFromProfile(ProfileRefPtr profile) {
+void VPNProvider::CreateServicesFromProfile(const ProfileRefPtr &profile) {
   SLOG(VPN, 2) << __func__;
   const StoreInterface *storage = profile->GetConstStorage();
   set<string> groups =