diff --git a/src/events/intro/arcologySelection.js b/src/events/intro/arcologySelection.js
index 0210540a39457fb64eb9de22839917cafd9c8bb8..83dc574fb13e997d97d231d9f779755aa3dd9f43 100644
--- a/src/events/intro/arcologySelection.js
+++ b/src/events/intro/arcologySelection.js
@@ -195,7 +195,7 @@ App.Intro.generateEstablishedArcologies = function(price) {
 					V.weatherCladding = 0;
 					V.rep = 0;
 
-					if (V.secExpEnabled) {
+					if (V.secExpEnabled && V.SecExp.core) {
 						V.SecExp.core.authority = 0;
 					}