diff --git a/buffet/commands/dbus_command_proxy.h b/buffet/commands/dbus_command_proxy.h
index eb37d32..553470e 100644
--- a/buffet/commands/dbus_command_proxy.h
+++ b/buffet/commands/dbus_command_proxy.h
@@ -46,7 +46,7 @@
   chromeos::dbus_utils::ExportedProperty<std::string> id_;
   chromeos::dbus_utils::ExportedProperty<std::string> status_;
   chromeos::dbus_utils::ExportedProperty<int32_t> progress_;
-  chromeos::dbus_utils::ExportedProperty<chromeos::dbus_utils::Dictionary>
+  chromeos::dbus_utils::ExportedProperty<chromeos::VariantDictionary>
       parameters_;
 
   // Handles calls to org.chromium.Buffet.Command.SetProgress(progress).