diff --git a/headers/os/interface/ChannelSlider.h b/headers/os/interface/ChannelSlider.h
index 2497d5b41c..8cc3a6c5fc 100644
--- a/headers/os/interface/ChannelSlider.h
+++ b/headers/os/interface/ChannelSlider.h
@@ -113,14 +113,14 @@ private:
 				const BChannelSlider &);
 
 
-virtual	status_t _Reserved_BChannelSlider_0(void *, ...);
-virtual	status_t _Reserved_BChannelSlider_1(void *, ...);
-virtual	status_t _Reserved_BChannelSlider_2(void *, ...);
-virtual	status_t _Reserved_BChannelSlider_3(void *, ...);
-virtual	status_t _Reserved_BChannelSlider_4(void *, ...);
-virtual	status_t _Reserved_BChannelSlider_5(void *, ...);
-virtual	status_t _Reserved_BChannelSlider_6(void *, ...);
-virtual	status_t _Reserved_BChannelSlider_7(void *, ...);
+virtual	void _Reserved_BChannelSlider_0(void *, ...);
+virtual	void _Reserved_BChannelSlider_1(void *, ...);
+virtual	void _Reserved_BChannelSlider_2(void *, ...);
+virtual	void _Reserved_BChannelSlider_3(void *, ...);
+virtual	void _Reserved_BChannelSlider_4(void *, ...);
+virtual	void _Reserved_BChannelSlider_5(void *, ...);
+virtual	void _Reserved_BChannelSlider_6(void *, ...);
+virtual	void _Reserved_BChannelSlider_7(void *, ...);
 
 		float _m_baseline;
 		float _m_linefeed;