diff --git a/js/selection/ShapeSelection.js b/js/selection/ShapeSelection.js
index c1574c8..2b0eda1 100644
--- a/js/selection/ShapeSelection.js
+++ b/js/selection/ShapeSelection.js
@@ -1,7 +1,7 @@
 (function () {
 	var ns = $.namespace("pskl.selection");
 
-	ns.ShapeSelection = function (x0, y0) {
+	ns.ShapeSelection = function (pixels) {
 		this.pixels = pixels;
 	};