diff --git a/admin_phpsettings.php b/admin_phpsettings.php
index f8dcc5ef..b86c9de3 100644
--- a/admin_phpsettings.php
+++ b/admin_phpsettings.php
@@ -417,7 +417,7 @@ if ($page == 'overview') {
 				$max_spare_servers = isset($_POST['max_spare_servers']) ? (int) $_POST['max_spare_servers'] : 0;
 				$max_requests = isset($_POST['max_requests']) ? (int) $_POST['max_requests'] : 0;
 				$idle_timeout = isset($_POST['idle_timeout']) ? (int) $_POST['idle_timeout'] : 0;
-				$limit_extensions = validate($_POST['limit_extensions'], 'limit_extensions');
+				$limit_extensions = validate($_POST['limit_extensions'], 'limit_extensions', '^(\.[a-z]([a-z0-9]+)\ ?)+$');
 				
 				if (strlen($description) == 0 || strlen($description) > 50) {
 					standard_error('descriptioninvalid');
@@ -546,7 +546,7 @@ if ($page == 'overview') {
 				$max_spare_servers = isset($_POST['max_spare_servers']) ? (int) $_POST['max_spare_servers'] : $result['max_spare_servers'];
 				$max_requests = isset($_POST['max_requests']) ? (int) $_POST['max_requests'] : $result['max_requests'];
 				$idle_timeout = isset($_POST['idle_timeout']) ? (int) $_POST['idle_timeout'] : $result['idle_timeout'];
-				$limit_extensions = validate($_POST['limit_extensions'], 'limit_extensions');
+				$limit_extensions = validate($_POST['limit_extensions'], 'limit_extensions', '^(\.[a-z]([a-z0-9]+)\ ?)+$');
 				
 				if (strlen($description) == 0 || strlen($description) > 50) {
 					standard_error('descriptioninvalid');
diff --git a/lib/formfields/admin/phpconfig/formfield.fpmconfig_add.php b/lib/formfields/admin/phpconfig/formfield.fpmconfig_add.php
index a8d91d86..d5e86de2 100644
--- a/lib/formfields/admin/phpconfig/formfield.fpmconfig_add.php
+++ b/lib/formfields/admin/phpconfig/formfield.fpmconfig_add.php
@@ -85,10 +85,7 @@ return array(
 					'limit_extensions' => array(
 						'label' => $lng['serversettings']['phpfpm_settings']['limit_extensions']['title'],
 						'desc' => $lng['serversettings']['phpfpm_settings']['limit_extensions']['description'],
-						'type' => 'string',
-						'string_delimiter' => ' ',
-						'string_regexp' => '^\.[a-z]([a-z0-9]+)',
-						'string_emptyallowed' => false,
+						'type' => 'text',
 						'value' => '.php'
 					)
 				)
diff --git a/lib/formfields/admin/phpconfig/formfield.fpmconfig_edit.php b/lib/formfields/admin/phpconfig/formfield.fpmconfig_edit.php
index 6b8199e3..74593812 100644
--- a/lib/formfields/admin/phpconfig/formfield.fpmconfig_edit.php
+++ b/lib/formfields/admin/phpconfig/formfield.fpmconfig_edit.php
@@ -86,10 +86,7 @@ return array(
 					'limit_extensions' => array(
 						'label' => $lng['serversettings']['phpfpm_settings']['limit_extensions']['title'],
 						'desc' => $lng['serversettings']['phpfpm_settings']['limit_extensions']['description'],
-						'type' => 'string',
-						'string_delimiter' => ' ',
-						'string_regexp' => '^\.[a-z]([a-z0-9]+)',
-						'string_emptyallowed' => false,
+						'type' => 'text',
 						'value' => $result['limit_extensions']
 					)
 				)