diff --git a/usr.bin/tmux/window-copy.c b/usr.bin/tmux/window-copy.c
index f9dd292d614..64667753e11 100644
--- a/usr.bin/tmux/window-copy.c
+++ b/usr.bin/tmux/window-copy.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: window-copy.c,v 1.406 2026/06/13 20:39:11 nicm Exp $ */
+/* $OpenBSD: window-copy.c,v 1.407 2026/06/16 09:28:17 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -5403,8 +5403,12 @@ window_copy_update_cursor(struct window_mode_entry *wme, u_int cx, u_int cy)
 	u_int				 maxx;
 	int				 allow_onemore;
 
-	allow_onemore = (data->screen.sel != NULL && data->rectflag);
-	if (cy < screen_size_y(s)) {
+	/*
+	 * Allow rectangle selection to extend past end of current line to
+	 * behave the same as vi with virtualedit=block set.
+	 */
+	if (!data->rectflag && cy < screen_size_y(s)) {
+		allow_onemore = (data->screen.sel != NULL && data->rectflag);
 		py = screen_hsize(data->backing) + cy - data->oy;
 		maxx = window_copy_cursor_limit(wme, py, allow_onemore);
 		if (cx > maxx)