diff --git a/tests/model/SiteTreeHTMLEditorFieldTest.php b/tests/model/SiteTreeHTMLEditorFieldTest.php
index 1df60d53..81481c16 100644
--- a/tests/model/SiteTreeHTMLEditorFieldTest.php
+++ b/tests/model/SiteTreeHTMLEditorFieldTest.php
@@ -53,18 +53,18 @@ class SiteTreeHtmlEditorFieldTest extends FunctionalTest {
 		$editor->setValue('<img src="assets/example.jpg" />');
 		$editor->saveInto($sitetree);
 
-                $parser = new CSSContentParser($sitetree->Content);
-                $xml = $parser->getByXpath('//img');
-                $this->assertEquals('', $xml[0]['alt'], 'Alt tags are added by default.');
-                $this->assertEquals('', $xml[0]['title'], 'Title tags are added by default.');
+		$parser = new CSSContentParser($sitetree->Content);
+		$xml = $parser->getByXpath('//img');
+		$this->assertEquals('', (string)$xml[0]['alt'], 'Alt tags are added by default.');
+		$this->assertEquals('', (string)$xml[0]['title'], 'Title tags are added by default.');
 
-                $editor->setValue('<img src="assets/example.jpg" alt="foo" title="bar" />');
-                $editor->saveInto($sitetree);
+		$editor->setValue('<img src="assets/example.jpg" alt="foo" title="bar" />');
+		$editor->saveInto($sitetree);
 
-                $parser = new CSSContentParser($sitetree->Content);
-                $xml = $parser->getByXpath('//img');
-                $this->assertEquals('foo', $xml[0]['alt'], 'Alt tags are preserved.');
-                $this->assertEquals('bar', $xml[0]['title'], 'Title tags are preserved.');
+		$parser = new CSSContentParser($sitetree->Content);
+		$xml = $parser->getByXpath('//img');
+		$this->assertEquals('foo', (string)$xml[0]['alt'], 'Alt tags are preserved.');
+		$this->assertEquals('bar', (string)$xml[0]['title'], 'Title tags are preserved.');
 	}
 
 	public function testImageTracking() {