diff --git a/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_long.phpt b/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_long.phpt
index 8b5e7d6a48a..fcbf4e652eb 100644
--- a/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_long.phpt
+++ b/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_long.phpt
@@ -6,7 +6,7 @@ require_once('skipif.inc');
 require_once('skipifemb.inc');
 require_once('skipifconnectfailure.inc');
 
-if (!stristr(mysqli_get_client_info(), 'mysqlnd')) {
+if (!$IS_MYSQLND) {
 	die("skip: test applies only to mysqlnd");
 }
 
diff --git a/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_zero.phpt b/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_zero.phpt
index dd34d7da622..eb4c431e7d7 100644
--- a/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_zero.phpt
+++ b/ext/mysqli/tests/mysqli_mysqlnd_read_timeout_zero.phpt
@@ -6,7 +6,7 @@ require_once('skipif.inc');
 require_once('skipifemb.inc');
 require_once('skipifconnectfailure.inc');
 
-if (!stristr(mysqli_get_client_info(), 'mysqlnd')) {
+if (!$IS_MYSQLND) {
 	die("skip: test applies only to mysqlnd");
 }