diff --git a/src/path/Segment.js b/src/path/Segment.js
index 70b8b923..d1cbb837 100644
--- a/src/path/Segment.js
+++ b/src/path/Segment.js
@@ -130,7 +130,7 @@ var Segment = Base.extend(/** @lends Segment# */{
             } else {
                 point = arg0;
             }
-        } else if (typeof arg0 === 'object') {
+        } else if (arg0 == null || typeof arg0 === 'object') {
             // It doesn't matter if all of these arguments exist.
             // new SegmentPoint() produces creates points with (0, 0) otherwise.
             point = arg0;
diff --git a/test/tests/Segment.js b/test/tests/Segment.js
index 24ce21e9..3a2107af 100644
--- a/test/tests/Segment.js
+++ b/test/tests/Segment.js
@@ -12,6 +12,11 @@
 
 QUnit.module('Segment');
 
+test('new Segment()', function() {
+    var segment = new Segment(null, null, null);
+    equals(segment.toString(), '{ point: { x: 0, y: 0 } }');
+});
+
 test('new Segment(point)', function() {
     var segment = new Segment(new Point(10, 10));
     equals(segment.toString(), '{ point: { x: 10, y: 10 } }');
@@ -22,6 +27,11 @@ test('new Segment(x, y)', function() {
     equals(segment.toString(), '{ point: { x: 10, y: 10 } }');
 });
 
+test('new Segment(undefined)', function() {
+    var segment = new Segment(undefined);
+    equals(segment.toString(), '{ point: { x: 0, y: 0 } }');
+});
+
 test('new Segment(object)', function() {
     var segment = new Segment({ point: { x: 10, y: 10 }, handleIn: { x: 5, y: 5 }, handleOut: { x: 15, y: 15 } });
     equals(segment.toString(), '{ point: { x: 10, y: 10 }, handleIn: { x: 5, y: 5 }, handleOut: { x: 15, y: 15 } }');
@@ -32,6 +42,16 @@ test('new Segment(point, handleIn, handleOut)', function() {
     equals(segment.toString(), '{ point: { x: 10, y: 10 }, handleIn: { x: 5, y: 5 }, handleOut: { x: 15, y: 15 } }');
 });
 
+test('new Segment(null, null, null)', function() {
+    var segment = new Segment(null, null, null);
+    equals(segment.toString(), '{ point: { x: 0, y: 0 } }');
+});
+
+test('new Segment(undefined, null, null)', function() {
+    var segment = new Segment(undefined, null, null);
+    equals(segment.toString(), '{ point: { x: 0, y: 0 } }');
+});
+
 test('new Segment(x, y, inX, inY, outX, outY)', function() {
     var segment = new Segment(10, 10, 5, 5, 15, 15);
     equals(segment.toString(), '{ point: { x: 10, y: 10 }, handleIn: { x: 5, y: 5 }, handleOut: { x: 15, y: 15 } }');