diff --git a/src/widget.cpp b/src/widget.cpp
--- a/src/widget.cpp
+++ b/src/widget.cpp
@@ -103,9 +103,9 @@ static void ScrollbarClickPositioning(Wi
 		Point pt = HandleScrollbarHittest(sb, mi, ma, sb->type == NWID_HSCROLLBAR);
 
 		if (pos < pt.x) {
-			sb->UpdatePosition(rtl ? sb->GetCapacity() : -sb->GetCapacity());
+			sb->UpdatePosition(rtl ? 1 : -1, Scrollbar::SS_BIG);
 		} else if (pos > pt.y) {
-			sb->UpdatePosition(rtl ? -sb->GetCapacity() : sb->GetCapacity());
+			sb->UpdatePosition(rtl ? -1 : 1, Scrollbar::SS_BIG);
 		} else {
 			_scrollbar_start_pos = pt.x - mi - 9;
 			_scrollbar_size = ma - mi - 23;