diff --git a/tests/unicode/func/strpos.phpt b/tests/unicode/func/strpos.phpt
index 9bef742e973..785ae73d769 100644
--- a/tests/unicode/func/strpos.phpt
+++ b/tests/unicode/func/strpos.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Unicode: strpos() function test
+--INI--
+unicode_semantics=on
 --FILE--
 <?php
 $a = "a™ᄒ\U020021z";
diff --git a/tests/unicode/func/strstr.phpt b/tests/unicode/func/strstr.phpt
index ad5727dadac..38d8eb5e91d 100644
--- a/tests/unicode/func/strstr.phpt
+++ b/tests/unicode/func/strstr.phpt
@@ -1,5 +1,7 @@
 --TEST--
 Unicode: strpos() function test
+--INI--
+unicode_semantics=on
 --FILE--
 <?php
 $a = "a™ᄒ\U020021z";