diff --git a/src/js/removeSlave.js b/src/js/removeSlave.js
index eefd9a8a4180914330403bd31714e638e7040b6a..70e67b866c22907b8abb1f5d61fb10145d368ffa 100644
--- a/src/js/removeSlave.js
+++ b/src/js/removeSlave.js
@@ -125,7 +125,7 @@ globalThis.removeSlave = function(slave) {
 			V.pit.fighterIDs.delete(AS_ID);
 		}
 		// scheduled pit fight
-		if (V.pit && V.pit.slavesFighting.includes(AS_ID)) {
+		if (V.pit && V.pit.slavesFighting?.includes(AS_ID)) {
 			V.pit.slavesFighting = null;
 		}