diff --git a/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php b/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
index f81e689..247fdad 100644
--- a/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
@@ -121,7 +121,7 @@ public function testGenerateHrefs($route_name, array $parameters, $absolute, $ur
   }
 
   /**
-   * Tests the generateFromUrl() method.
+   * Tests the generateFromUrl() method with a route.
    *
    * @covers ::generateFromUrl()
    */
@@ -131,7 +131,7 @@ public function testGenerateFromUrl() {
       ->with('test_route_1', array(), array('fragment' => 'the-fragment') + $this->defaultOptions)
       ->will($this->returnValue('/test-route-1#the-fragment'));
 
-    $this->moduleHandler->expects($this->exactly(2))
+    $this->moduleHandler->expects($this->once())
       ->method('alter')
       ->with('link', $this->isType('array'));
 
@@ -146,12 +146,26 @@ public function testGenerateFromUrl() {
       ),
       'content' => 'Test',
     ), $result);
+  }
 
+  /**
+   * Tests the generateFromUrl() method with an external URL.
+   *
+   * The set_active_class option is set to TRUE to insure this does not cause
+   * an error with an external URL.
+   *
+   * @covers ::generateFromUrl()
+   */
+  public function testGenerateFromUrlExternal() {
     $this->urlGenerator->expects($this->once())
       ->method('generateFromPath')
       ->with('http://drupal.org', array('external' => TRUE, 'set_active_class' => TRUE) + $this->defaultOptions)
       ->will($this->returnValue('http://drupal.org'));
 
+    $this->moduleHandler->expects($this->once())
+      ->method('alter')
+      ->with('link', $this->isType('array'));
+
     $url = Url::createFromPath('http://drupal.org');
     $url->setUrlGenerator($this->urlGenerator);
     $url->setOption('set_active_class', TRUE);