1 files changed, 7 insertions, 6 deletions
diff --git a/intern/audaspace/FX/AUD_PingPongFactory.h b/intern/audaspace/FX/AUD_PingPongFactory.h
index b8854da550a..82aedca8f7f 100644
--- a/intern/audaspace/FX/AUD_PingPongFactory.h
+++ b/intern/audaspace/FX/AUD_PingPongFactory.h
@@ -34,18 +34,19 @@
  */
 class AUD_PingPongFactory : public AUD_EffectFactory
 {
+private:
+	// hide copy constructor and operator=
+	AUD_PingPongFactory(const AUD_PingPongFactory&);
+	AUD_PingPongFactory& operator=(const AUD_PingPongFactory&);
+
 public:
 	/**
 	 * Creates a new ping pong factory.
 	 * \param factory The input factory.
 	 */
-	AUD_PingPongFactory(AUD_IFactory* factory = 0);
-
-	/**
-	 * Destroys the factory.
-	 */
+	AUD_PingPongFactory(AUD_IFactory* factory);
 
-	virtual AUD_IReader* createReader();
+	virtual AUD_IReader* createReader() const;
 };
 
 #endif //AUD_PINGPONGFACTORY