diff --git a/evwkow5289.js b/evwkow5289.js
index f7cb525..a5e9c9d 100644
--- a/evwkow5289.js
+++ b/evwkow5289.js
@@ -18,8 +18,8 @@ if (!this.initialized) {
 	
 	this.size = GameLib.Utils.GetWindowSize();
 	
-	this.x = size.width / 2;
-	this.y = size.height / 2;
+	this.x = this.size.width / 2;
+	this.y = this.size.height / 2;
 		
 	this.initialized = true;
 }