diff --git a/test/tests/Path_Boolean.js b/test/tests/Path_Boolean.js
new file mode 100644
index 00000000..5895e693
--- /dev/null
+++ b/test/tests/Path_Boolean.js
@@ -0,0 +1,31 @@
+/*
+ * Paper.js - The Swiss Army Knife of Vector Graphics Scripting.
+ * http://paperjs.org/
+ *
+ * Copyright (c) 2011 - 2014, Juerg Lehni & Jonathan Puckey
+ * http://scratchdisk.com/ & http://jonathanpuckey.com/
+ *
+ * Distributed under the MIT license. See LICENSE file for details.
+ *
+ * All rights reserved.
+ */
+
+module('Path Boolean Operations');
+
+test('path.unite(); #609', function() {
+    // https://github.com/paperjs/paper.js/issues/609
+    // path1 and path2 are half circles, applying unite should result in a circle
+
+    var path1 = new Path();
+    path1.moveTo(new Point(100, 100));
+    path1.arcTo(new Point(100, 200));
+    path1.closePath();
+
+    var path2 = new Path();
+    path2.moveTo(new Point(100, 200));
+    path2.arcTo(new Point(100, 100));
+    path2.closePath();
+
+    var path3 = path1.unite(path2);
+    equals(path3.pathData, 'M100,100c27.61424,0 50,22.38576 50,50c0,27.61424 -22.38576,50 -50,50z M100,200c-27.61424,0 -50,-22.38576 -50,-50c0,-27.61424 22.38576,-50 50,-50z', 'path3.pathData');
+});
diff --git a/test/tests/load.js b/test/tests/load.js
index 7fb01db5..4b250c7a 100644
--- a/test/tests/load.js
+++ b/test/tests/load.js
@@ -36,6 +36,7 @@
 /*#*/ include('Path_Bounds.js');
 /*#*/ include('Path_Length.js');
 /*#*/ include('Path_Intersections.js');
+/*#*/ include('Path_Boolean.js');
 
 /*#*/ include('Curve.js');
 /*#*/ include('CurveLocation.js');