diff --git a/policy_manager/variable.h b/policy_manager/variable.h
index ab19f72..da8eee9 100644
--- a/policy_manager/variable.h
+++ b/policy_manager/variable.h
@@ -177,6 +177,7 @@
   friend class PmRealTimeProviderTest;
   FRIEND_TEST(PmRealTimeProviderTest, CurrDateValid);
   FRIEND_TEST(PmRealTimeProviderTest, CurrHourValid);
+  friend class PmRealUpdaterProviderTest;
 
   Variable(const std::string& name, VariableMode mode)
       : BaseVariable(name, mode) {}