diff --git a/xtrn/mc/mc.js b/xtrn/mc/mc.js
index e81fc06dc82d7ba959022a8d28e1d0f67f1920d8..a0154ac37bc125f49b69f418706b238d9ce6f904 100644
--- a/xtrn/mc/mc.js
+++ b/xtrn/mc/mc.js
@@ -516,7 +516,7 @@ function mc_main()
 				if(check_played(3)) {
 					twenty=true;
 					player.played_twenty1++;
-					twenty1.play();
+					Twenty1.play();
 					twenty=false;
 				}
 				break;