diff --git a/cros/daemon_chromeos.h b/cros/daemon_chromeos.h
index ab9d4b2..b23c2a6 100644
--- a/cros/daemon_chromeos.h
+++ b/cros/daemon_chromeos.h
@@ -23,6 +23,7 @@
 #include "update_engine/common/daemon_state_interface.h"
 #include "update_engine/common/subprocess.h"
 #include "update_engine/cros/dbus_service.h"
+#include "update_engine/cros/real_system_state.h"
 
 namespace chromeos_update_engine {
 
@@ -39,6 +40,13 @@
   // initialization.
   void OnDBusRegistered(bool succeeded);
 
+  // |SystemState| is a global context, but we can't have a static singleton of
+  // its object because the style guide does not allow that (it has non-trivial
+  // dtor). We need an instance of |SystemState| in this class instead and have
+  // a global pointer to it. This is better to be defined as the first variable
+  // of this class so it is initialized first and destructed last.
+  RealSystemState system_state_;
+
   // Main D-Bus service adaptor.
   std::unique_ptr<UpdateEngineAdaptor> dbus_adaptor_;