diff --git a/include/viswin.cpp b/include/viswin.cpp
index 2e61b50bc..48993b4d7 100755
--- a/include/viswin.cpp
+++ b/include/viswin.cpp
@@ -723,7 +723,7 @@ void TViswin::paint_column (long j, bool end)
   RCT clipper;
   xvt_rect_set(&clipper, tabx(X_OFFSET), 0, tabx(X_OFFSET+1), taby(int(_textrows)));
   if (end)
-    xvt_rect_offset(&clipper, tabx(int(_textcolumns)), 0);
+    xvt_rect_offset(&clipper, tabx(int(_textcolumns-1)), 0);
   xvt_dwin_set_clip(win(), &clipper);
   
   const int col = end ? (int) (_textcolumns + X_OFFSET -1) : X_OFFSET;
@@ -1478,7 +1478,7 @@ void TViswin::handler (WINDOW win, EVENT * ep)
           _point.y++;
           _need_scroll = up;
         }
-        else scroll_error(-1, _txt.lines()-_textrows-1);
+        else scroll_error(-1, _txt.lines()-_textrows/*-1*/);
       }
       else
       {