diff --git a/src/gui/curses/gui-curses-window.c b/src/gui/curses/gui-curses-window.c
index fc5b8e9b3..21ec67da6 100644
--- a/src/gui/curses/gui-curses-window.c
+++ b/src/gui/curses/gui-curses-window.c
@@ -1498,9 +1498,12 @@ gui_window_scroll_beyond_end (struct t_gui_window *window)
     if (!gui_init_ok)
         return;
 
-    window->scroll->start_line = window->buffer->lines->last_line;
-    window->scroll->start_line_pos = -1;
-    gui_buffer_ask_chat_refresh (window->buffer, 2);
+    if (window->buffer->lines)
+    {
+        window->scroll->start_line = window->buffer->lines->last_line;
+        window->scroll->start_line_pos = -1;
+        gui_buffer_ask_chat_refresh (window->buffer, 2);
+    }
 }
 
 /*