diff --git a/src/lib/utils/thread.h b/src/lib/utils/thread.h
index 9b860d62..f73c4f39 100644
--- a/src/lib/utils/thread.h
+++ b/src/lib/utils/thread.h
@@ -121,10 +121,10 @@ class WaitThread : public Thread {
   virtual ~WaitThread();
 
   // @copydoc
-  virtual void stop();
+  virtual void stop() override;
 
   // @copydoc
-  virtual bool join();
+  virtual bool join() override;
 
   /**
    * Wait for the specified amount of time.