diff --git a/headers/os/interface/ChannelSlider.h b/headers/os/interface/ChannelSlider.h
index 5151ef14b1..23de9a239d 100644
--- a/headers/os/interface/ChannelSlider.h
+++ b/headers/os/interface/ChannelSlider.h
@@ -84,6 +84,8 @@ public:
 	virtual	float				ThumbDeltaFor(int32 channel);
 	virtual	float				ThumbRangeFor(int32 channel);
 
+	virtual void				UpdateToolTip(int32 currentValue);
+
 private:
 	// FBC padding
 								BChannelSlider(const BChannelSlider&);
@@ -97,7 +99,6 @@ private:
 	virtual	void				_Reserved_BChannelSlider_4(void*, ...);
 	virtual	void				_Reserved_BChannelSlider_5(void*, ...);
 	virtual	void				_Reserved_BChannelSlider_6(void*, ...);
-	virtual	void				_Reserved_BChannelSlider_7(void*, ...);
 
 private:
 			void				_InitData();
diff --git a/src/kits/interface/ChannelSlider.cpp b/src/kits/interface/ChannelSlider.cpp
index ef17bbb376..b73ffbf481 100644
--- a/src/kits/interface/ChannelSlider.cpp
+++ b/src/kits/interface/ChannelSlider.cpp
@@ -701,6 +701,15 @@ BChannelSlider::ThumbRangeFor(int32 channel)
 }
 
 
+void
+BChannelSlider::UpdateToolTip(int32 currentValue)
+{
+	BString valueString;
+	valueString.SetToFormat("%" B_PRId32, currentValue);
+	SetToolTip(valueString);
+}
+
+
 // #pragma mark -
 
 
@@ -821,10 +830,7 @@ BChannelSlider::_DrawThumbs()
 
 			// draw some kind of current value tool tip
 			if (fCurrentChannel != -1 && fMinPoint != 0) {
-				char valueString[32];
-				snprintf(valueString, 32, "%" B_PRId32,
-					ValueFor(fCurrentChannel));
-				SetToolTip(valueString);
+				UpdateToolTip(ValueFor(fCurrentChannel));
 				ShowToolTip(ToolTip());
 			} else {
 				HideToolTip();
@@ -900,4 +906,3 @@ void BChannelSlider::_Reserved_BChannelSlider_3(void*, ...) {}
 void BChannelSlider::_Reserved_BChannelSlider_4(void*, ...) {}
 void BChannelSlider::_Reserved_BChannelSlider_5(void*, ...) {}
 void BChannelSlider::_Reserved_BChannelSlider_6(void*, ...) {}
-void BChannelSlider::_Reserved_BChannelSlider_7(void*, ...) {}
diff --git a/src/kits/media/DefaultMediaTheme.cpp b/src/kits/media/DefaultMediaTheme.cpp
index 8ea04bc459..799ae8763b 100644
--- a/src/kits/media/DefaultMediaTheme.cpp
+++ b/src/kits/media/DefaultMediaTheme.cpp
@@ -104,6 +104,7 @@ class ChannelSlider : public BChannelSlider {
 
 		virtual void AttachedToWindow();
 		virtual void DetachedFromWindow();
+		virtual void UpdateToolTip(int32 currentValue);
 	private:
 		BContinuousParameter &fParameter;
 };
@@ -432,6 +433,15 @@ ChannelSlider::DetachedFromWindow()
 }
 
 
+void
+ChannelSlider::UpdateToolTip(int32 currentValue)
+{
+	BString valueString;
+	valueString.SetToFormat("%.1f", currentValue / 1000.0);
+	SetToolTip(valueString);
+}
+
+
 TextControl::TextControl(const char* name, const char* label,
 	BTextParameter &parameter)
 	: BTextControl(name, label, "", NULL),