diff --git a/game/game.js b/game/game.js
index 4ed9fadb3..f3021e83a 100644
--- a/game/game.js
+++ b/game/game.js
@@ -59279,7 +59279,7 @@
 			if(node._nointro) return;
 			if(typeof node._customintro=='function'){
 				if(node._customintro(uiintro,evt)===false) return;
-				lib.placePoppedDialog(uiintro,evt);
+				if(evt)lib.placePoppedDialog(uiintro,evt);
 			}
 			else if(Array.isArray(node._customintro)){
 				var caption=node._customintro[0];