X-Git-Url: https://git.auder.net/?p=xogo.git;a=blobdiff_plain;f=variants%2FAntiking1%2Fclass.js;h=4ef66f2a817569021dd7abadd28be7290d4eb354;hp=323b826e992123dc4095d115254558474068c09c;hb=182ba661e9c6e30fc641f4e71f29ae76961f4510;hpb=b9877ed29697640d72b8f3d89848863fc87bd7e8

diff --git a/variants/Antiking1/class.js b/variants/Antiking1/class.js
index 323b826..4ef66f2 100644
--- a/variants/Antiking1/class.js
+++ b/variants/Antiking1/class.js
@@ -48,7 +48,7 @@ export default class Antiking1Rules extends AbstractAntikingRules {
 
   getFlagsFen() {
     return (
-      Array.prototype.concat.apply(
+      Array.prototype.concat.apply([],
         ['w', 'b'].map(c => {
           const res = Object.keys(this.kingFlags[c]).join("");
           return (c == 'w' ? res.toUpperCase() : res);