diff --git a/ext/pcre/tests/grep2.phpt b/ext/pcre/tests/grep2.phpt
index 5aee98b9e4d..9721dfbd9ee 100644
--- a/ext/pcre/tests/grep2.phpt
+++ b/ext/pcre/tests/grep2.phpt
@@ -2,6 +2,8 @@
 preg_grep() 2nd test
 --SKIPIF--
 <?php if (!PCRE_JIT_SUPPORT) die("skip no pcre jit support"); ?>
+--INI--
+pcre.jit=1
 --FILE--
 <?php