1 files changed, 2 insertions, 1 deletions
diff --git a/install.php b/install.php
index d7f0e962b..e955cf0af 100644
--- a/install.php
+++ b/install.php
@@ -427,7 +427,8 @@ function check_functions(){
                          'file file_exists fseek flush filesize ftell fopen '.
                          'glob header ignore_user_abort ini_get mail mkdir '.
                          'ob_start opendir parse_ini_file readfile realpath '.
-                         'rename rmdir serialize session_start unlink usleep');
+                         'rename rmdir serialize session_start unlink usleep'.
+                         'preg_replace');
 
     if (!function_exists('mb_substr')) {
       $funcs[] = 'utf8_encode';