diff --git a/classes/API/Gravatar.php b/classes/API/Gravatar.php
index b438e65..edb7ba9 100644
--- a/classes/API/Gravatar.php
+++ b/classes/API/Gravatar.php
@@ -69,7 +69,7 @@ class API_Gravatar
 		}
 		elseif (!in_array($rating, array('g', 'pg', 'r', 'x')))
 		{
-			throw new Exception('Invalid rating perameter, expecting g, pg, r or x.');
+			throw new Exception('Invalid rating parameter, expecting g, pg, r or x.');
 		}
 		else
 		{
diff --git a/tests/classes/API/GravatarTest.php b/tests/classes/API/GravatarTest.php
index bd790e1..20d9938 100644
--- a/tests/classes/API/GravatarTest.php
+++ b/tests/classes/API/GravatarTest.php
@@ -47,13 +47,21 @@ class API_Gravatar_Test extends PHPUnit_Framework_TestCase
 
 	/**
 	 * @expectedException        Exception
-	 * @expectedExceptionMessage Invalid rating perameter, expecting g, pg, r or x.
+	 * @expectedExceptionMessage Invalid rating parameter, expecting g, pg, r or x.
 	 */
 	public function testImgInvalidRating()
 	{
 		API_Gravatar::img('foo@bar.com', 80, 'gravatar', 'sexytime');
 	}
 
+	public function testURLDefault()
+	{
+		$this->assertEquals(
+			'<img src="http://www.gravatar.com/avatar/f3ada405ce890b6f8204094deb12d8a8?s=80&d=http%253A%252F%252Fexample.org%252Ficon&r=g">',
+			API_Gravatar::img('foo@bar.com', 80, 'http://example.org/icon')
+		);
+	}
+
 	public function testImg()
 	{
 		$this->assertEquals(