diff --git a/mock_system_state.cc b/mock_system_state.cc
index d25f3c9..b7ed27b 100644
--- a/mock_system_state.cc
+++ b/mock_system_state.cc
@@ -13,7 +13,7 @@
   : default_request_params_(this),
     prefs_(&mock_prefs_) {
   request_params_ = &default_request_params_;
-  mock_payload_state_.Initialize(&mock_prefs_);
+  mock_payload_state_.Initialize(this);
   mock_gpio_handler_ = new testing::NiceMock<MockGpioHandler>();
   mock_update_attempter_ = new testing::NiceMock<UpdateAttempterMock>(
       this, &dbus_);