diff --git a/test/phpunit/ParserTest.php b/test/phpunit/ParserTest.php
index fdce5c70..0451b7b4 100644
--- a/test/phpunit/ParserTest.php
+++ b/test/phpunit/ParserTest.php
@@ -41,7 +41,7 @@ public function testGetVariables() {
 
 	public function testAllParsedFiles() {
 		$parser = new Less_Parser();
-		$baseDir = realpath( $this->fixtures_dir . '/less.php/less' );
+		$baseDir = Less_Parser::WinPath( realpath( $this->fixtures_dir . '/less.php/less' ) );
 		$parser->parseFile( $baseDir . '/imports.less' );
 		$parser->getCss();