Index: treeview.c
===================================================================
--- treeview.c	(revision 1206)
+++ treeview.c	(working copy)
@@ -3217,7 +3217,7 @@
     {
         scrollRect.top = nextItem->rect.top;
 
-        ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, NULL,
+        ScrollWindowEx (infoPtr->hwnd, 0, scrollDist, &scrollRect, &scrollRect,
                        NULL, NULL, SW_ERASE | SW_INVALIDATE);
         TREEVIEW_Invalidate(infoPtr, wineItem);
     } else {