diff --git a/tmate-master.c b/tmate-master.c
index 4b505c70..f0d2f86f 100644
--- a/tmate-master.c
+++ b/tmate-master.c
@@ -33,13 +33,15 @@ static void do_snapshot(struct tmate_unpacker *uk,
 	screen = &pane->base;
 	grid = screen->grid;
 
-	pack(array, 3);
+	pack(array, 4);
 	pack(int, pane->id);
 
 	pack(array, 2);
 	pack(int, screen->cx);
 	pack(int, screen->cy);
 
+	pack(unsigned_int, screen->mode);
+
 	max_lines = max_history_lines + grid->sy;
 
 #define grid_num_lines(grid) (grid->hsize + grid->sy)