diff --git a/src/item/Raster.js b/src/item/Raster.js
index b9f19221..c1433927 100644
--- a/src/item/Raster.js
+++ b/src/item/Raster.js
@@ -88,6 +88,8 @@ var Raster = this.Raster = PlacedItem.extend(/** @lends Raster# */{
 				this.setImage(object);
 			}
 		}
+		if (!this._size)
+			this._size = new Size();
 	},
 
 	clone: function() {
@@ -114,7 +116,7 @@ var Raster = this.Raster = PlacedItem.extend(/** @lends Raster# */{
 
 	setSize: function() {
 		var size = Size.read(arguments);
-		if (!this._size || !this._size.equals(size)) {
+		if (!this._size.equals(size)) {
 			// Get reference to image before changing canvas
 			var element = this.getElement();
 			// Setting canvas internally sets _size
diff --git a/test/tests/Raster.js b/test/tests/Raster.js
index 1ece61da..6d540d49 100644
--- a/test/tests/Raster.js
+++ b/test/tests/Raster.js
@@ -12,6 +12,11 @@
 
 module('Raster');
 
+test('Create a raster without a source and check its size', function() {
+	var raster = new Raster();
+	equals(raster.size.toString(), new Size(0, 0).toString(), true);
+});
+
 test('Create a raster without a source and set its size', function() {
 	var raster = new Raster();
 	raster.size = [640, 480];