diff --git a/engine/include/fishbone/thread.h b/engine/include/fishbone/thread.h
index b210e17..014bd9b 100644
--- a/engine/include/fishbone/thread.h
+++ b/engine/include/fishbone/thread.h
@@ -28,6 +28,9 @@ namespace fishbone {
 		Mutex();
 		~Mutex();
 
+		Mutex(const Mutex&)	       = delete;
+		Mutex& operator=(const Mutex&) = delete;
+
 		void lock();
 		void unlock();
 	};