diff --git a/dev/SapphireTest.php b/dev/SapphireTest.php
index e4eede1a4..5e657f4c8 100755
--- a/dev/SapphireTest.php
+++ b/dev/SapphireTest.php
@@ -34,6 +34,7 @@ class SapphireTest extends PHPUnit_Framework_TestCase {
 	protected $originalRequirements;
 	protected $originalIsRunningTest;
 	protected $originalTheme;
+	protected $originalNestedURLsState;
 	
 	protected $mailer;
 	
@@ -109,6 +110,9 @@ class SapphireTest extends PHPUnit_Framework_TestCase {
 		Controller::curr()->setSession(new Session(array()));
 		
 		$this->originalTheme = SSViewer::current_theme();
+		
+		// Save nested_urls state, so we can restore it later
+		$this->originalNestedURLsState = SiteTree::nested_urls();
 
 		$className = get_class($this);
 		$fixtureFile = eval("return {$className}::\$fixture_file;");
@@ -346,6 +350,12 @@ class SapphireTest extends PHPUnit_Framework_TestCase {
 
 		// Reset mocked datetime
 		SS_Datetime::clear_mock_now();
+		
+		// Restore nested_urls state
+		if ( $this->originalNestedURLsState )
+			SiteTree::enable_nested_urls();
+		else
+			SiteTree::disable_nested_urls();
 	}
 	/**
 	 * Clear the log of emails sent