fix quick setup undo bug

1 files changed, 1 insertions, 1 deletions

diff --git a/rules.js b/rules.js
index 96ca689..e3bd17c 100644
--- a/rules.js
+++ b/rules.js
@@ -1559,7 +1559,7 @@ states.scenario_setup = {
 
 			if (current_player_quick_setup()) {
 				// only allow quick-setup as the very first action
-				if (game.undo.length === 0)
+				if (game.undo && game.undo.length === 0)
 					view.actions.quick_setup = 1
 			}
 		} else {