diff --git a/tests/phpunit/N3QuoterTest.php b/tests/phpunit/N3QuoterTest.php
index b92d7ed..9e3758f 100644
--- a/tests/phpunit/N3QuoterTest.php
+++ b/tests/phpunit/N3QuoterTest.php
@@ -1,77 +1,77 @@
 <?php
 
 namespace Wikimedia\Purtle\Tests;
 
 use PHPUnit_Framework_TestCase;
 use Wikimedia\Purtle\N3Quoter;
 
 /**
  * @covers Wikimedia\Purtle\N3Quoter
  *
  * @uses Wikimedia\Purtle\UnicodeEscaper
  *
  * @group Purtle
  *
  * @license GPL-2.0+
  * @author Daniel Kinzler
  */
 class N3QuoterTest extends PHPUnit_Framework_TestCase {
 
 	public function provideEscapeIRI() {
 		return array(
 			array(
 				'http://acme.com/test.php?x=y&foo=bar#part',
 				'http://acme.com/test.php?x=y&foo=bar#part',
 			),
 			array(
 				'http://acme.com/"evil stuff"',
 				'http://acme.com/%22evil%20stuff%22',
 			),
 			array(
 				'http://acme.com/<wacky stuff>',
 				'http://acme.com/%3Cwacky%20stuff%3E',
 			),
 			array(
 				'http://acme.com\\back\\slash',
 				'http://acme.com%5Cback%5Cslash',
 			),
 			array(
 				'http://acme.com/~`!@#$%^&*()-_=+[]{}|:;\'",.<>/?',
 				'http://acme.com/~%60!@#$%%5E&*()-_=+[]%7B%7D%7C:;\'%22,.%3C%3E/?',
 			),
 		);
 	}
 
 	/**
 	 * @dataProvider provideEscapeIRI
 	 */
 	public function testEscapeIRI( $iri, $expected ) {
 		$quoter = new N3Quoter();
 
 		$this->assertEquals( $expected, $quoter->escapeIRI( $iri ) );
 	}
 
 	public function provideEscapeLiteral() {
 		return array(
-			array( "Hello World", 'Hello World' ),
+			array( 'Hello World', 'Hello World' ),
 			array( "Hello\nWorld", 'Hello\nWorld' ),
 			array( "Hello\tWorld", 'Hello\tWorld' ),
-			array( "Hällo Wörld", 'Hällo Wörld', false ),
-			array( "Hällo Wörld", 'H\u00E4llo W\u00F6rld', true ),
+			array( 'Hällo Wörld', 'Hällo Wörld', false ),
+			array( 'Hällo Wörld', 'H\u00E4llo W\u00F6rld', true ),
 			array( '\a', '\\\\a' ),
 			array( "\x7\v\0\x1F", '\u0007\u000B\u0000\u001F' ),
 
 		);
 	}
 
 	/**
 	 * @dataProvider provideEscapeLiteral
 	 */
 	public function testEscapeLiteral( $literal, $expected, $escapeUnicode = false ) {
 		$quoter = new N3Quoter();
 		$quoter->setEscapeUnicode( $escapeUnicode );
 
 		$this->assertEquals( $expected, $quoter->escapeLiteral( $literal ) );
 	}
 
 }