diff --git a/src/window_peep.c b/src/window_peep.c
index de591b9e7e..a43fc2e5e1 100644
--- a/src/window_peep.c
+++ b/src/window_peep.c
@@ -501,7 +501,7 @@ void window_peep_open(rct_peep* peep){
 		window->min_height = 157;
 		window->max_width = 500;
 		window->max_height = 450;
-		window->flags = 1 << 8;
+		window->flags = WF_RESIZABLE;
 		window->no_list_items = 0;
 		window->selected_list_item = -1;
 		window->colours[0] = 1;