diff --git a/phpunit b/phpunit
index 0d91ad43f9..c87e7a4280 100755
--- a/phpunit
+++ b/phpunit
@@ -8,7 +8,7 @@ $PHPUNIT_DIR = __DIR__.'/.phpunit';
 
 // PHPUnit 4.8 does not support PHP 7, while 5.0 requires PHP 5.6+
 if (PHP_VERSION_ID >= 70000) {
-    $PHPUNIT_DIR = '5.0';
+    $PHPUNIT_VERSION = '5.0';
 }
 
 if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit")) {