diff --git a/uppsrc/CtrlLib/ScrollBar.cpp b/uppsrc/CtrlLib/ScrollBar.cpp
index f1a9859a0..bd45ce878 100644
--- a/uppsrc/CtrlLib/ScrollBar.cpp
+++ b/uppsrc/CtrlLib/ScrollBar.cpp
@@ -284,6 +284,11 @@ void ScrollBar::LeftRepeat(Point p, dword) {
 	Refresh();
 }
 
+void ScrollBar::MouseWheel(Point p, int zdelta, dword keyflags)
+{
+	Wheel(zdelta);
+}
+
 void ScrollBar::CancelMode() {
 	push = light = -1;
 }
diff --git a/uppsrc/CtrlLib/ScrollBar.h b/uppsrc/CtrlLib/ScrollBar.h
index 330bd2981..5342c5baa 100644
--- a/uppsrc/CtrlLib/ScrollBar.h
+++ b/uppsrc/CtrlLib/ScrollBar.h
@@ -9,6 +9,7 @@ public:
 	virtual void MouseLeave();
 	virtual void LeftUp(Point p, dword);
 	virtual void LeftRepeat(Point p, dword);
+	virtual void MouseWheel(Point p, int zdelta, dword keyflags);
 	virtual void CancelMode();
 
 	virtual void FrameLayout(Rect& r);