diff --git a/window-copy.c b/window-copy.c
index 5065df0d..6ef4b29d 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -1810,6 +1810,7 @@ window_copy_clear_selection(struct window_pane *wp)
 	screen_clear_selection(&data->screen);
 
 	data->cursordrag = CURSORDRAG_NONE;
+	data->lineflag = LINE_SEL_NONE;
 
 	py = screen_hsize(data->backing) + data->cy - data->oy;
 	px = window_copy_find_length(wp, py);