diff --git a/system_state.cc b/system_state.cc
index da18500..2f7d0dd 100644
--- a/system_state.cc
+++ b/system_state.cc
@@ -64,4 +64,8 @@
   return file_util::PathExists(FilePath(kOOBECompletedMarker));
 }
 
+bool RealSystemState::IsOfficialBuild() {
+  return utils::IsOfficialBuild();
+}
+
 }  // namespace chromeos_update_engine