diff --git a/ext/phar/tests/invalid_string_phar_mungserver.phpt b/ext/phar/tests/invalid_string_phar_mungserver.phpt
index 46de113f6c08..8128987dacbc 100644
--- a/ext/phar/tests/invalid_string_phar_mungserver.phpt
+++ b/ext/phar/tests/invalid_string_phar_mungserver.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Passing invalid string to Phar::mungServer()
+--EXTENSIONS--
+phar
 --FILE--
 <?php