diff --git a/source/SkyAutoplayer.js b/source/SkyAutoplayer.js
index ef7a2cf..5677097 100644
--- a/source/SkyAutoplayer.js
+++ b/source/SkyAutoplayer.js
@@ -170,9 +170,9 @@ sheetmgr = {
 		var r = [];
 		var t_time = 0;
 		var t_sets = [];
-		const regexp = /^(\d)Key(\d{1,})$/;
+		const regexp = /^(?:\d)?Key(\d{1,})$/;
 		for(var i in raw) {
-			var key = Number(raw[i].key.replace(regexp, "$2"));
+			var key = Number(raw[i].key.replace(regexp, "$1"));
 			if(raw[i].time != t_time) {
 				r.push({time: t_time, keys: t_sets});
 				t_sets = [];