diff --git a/aos/logging/interface.h b/aos/logging/interface.h
index fafc9e2..50237fc 100644
--- a/aos/logging/interface.h
+++ b/aos/logging/interface.h
@@ -60,6 +60,8 @@
   // logger other than this one available while this is called.
   virtual void set_next(LogImplementation *next) { next_ = next; }
 
+  virtual bool fill_type_cache() { return true; }
+
  protected:
   // Actually logs the given message. Implementations should somehow create a
   // LogMessage and then call internal::FillInMessage.