diff --git a/update_attempter.cc b/update_attempter.cc
index 3a6988e..799cd20 100644
--- a/update_attempter.cc
+++ b/update_attempter.cc
@@ -1177,4 +1177,8 @@
   return false;
 }
 
+void UpdateAttempter::UpdateEngineStarted() {
+  system_state_->payload_state()->UpdateEngineStarted();
+}
+
 }  // namespace chromeos_update_engine