diff --git a/library/ajax/manage_admin.php b/library/ajax/manage_admin.php
index a383ba9a8..90467fd18 100644
--- a/library/ajax/manage_admin.php
+++ b/library/ajax/manage_admin.php
@@ -18,7 +18,11 @@ $mode = (string)$this->request['mode'];
 switch ($mode) {
     case 'clear_cache':
 
-        clean_cache();
+        foreach ($bb_cfg['cache']['engines'] as $cache_name => $cache_val) {
+            if (!in_array('db_sqlite', $cache_val)) {
+                CACHE($cache_name)->rm();
+            }
+        }
 
         $this->response['cache_html'] = '<span class="seed bold">' . $lang['ALL_CACHE_CLEARED'] . '</span>';
 
@@ -26,7 +30,9 @@ switch ($mode) {
 
     case 'clear_datastore':
 
-        clean_datastore();
+        global $datastore;
+
+        $datastore->clean();
 
         $this->response['datastore_html'] = '<span class="seed bold">' . $lang['DATASTORE_CLEARED'] . '</span>';
 
@@ -34,7 +40,18 @@ switch ($mode) {
 
     case 'clear_template_cache':
 
-        clean_tpl_cache();
+        global $template;
+
+        $match = 'tpl_';
+        $match_len = strlen($match);
+        $dir = $template->cachedir;
+        $res = @opendir($dir);
+        while (($file = readdir($res)) !== false) {
+            if (0 === strpos($file, $match)) {
+                @unlink($dir . $file);
+            }
+        }
+        closedir($res);
 
         $this->response['template_cache_html'] = '<span class="seed bold">' . $lang['ALL_TEMPLATE_CLEARED'] . '</span>';
 
diff --git a/library/includes/functions.php b/library/includes/functions.php
index 6970543c0..17de5ece5 100644
--- a/library/includes/functions.php
+++ b/library/includes/functions.php
@@ -11,56 +11,6 @@ if (!defined('BB_ROOT')) {
     die(basename(__FILE__));
 }
 
-/**
- * Clean all template cache
- *
- * @return void
- */
-function clean_tpl_cache(): void
-{
-    global $template;
-
-    $match = XS_TPL_PREFIX;
-    $dir = $template->cachedir;
-    $res = @opendir($dir);
-
-    while (($file = readdir($res)) !== false) {
-        if (0 === strpos($file, $match)) {
-            @unlink($dir . $file);
-        }
-    }
-
-    closedir($res);
-}
-
-/**
- * Clean all datastore items
- *
- * @return void
- */
-function clean_datastore(): void
-{
-    global $datastore;
-
-    $datastore->clean();
-}
-
-/**
- * Clean all cache items
- *
- * @return void
- */
-function clean_cache(): void
-{
-    global $bb_cfg;
-
-    foreach ($bb_cfg['cache']['engines'] as $cache_name => $cache_val) {
-        if (!in_array('db_sqlite', $cache_val)) {
-            CACHE($cache_name)->rm();
-        }
-    }
-}
-
 function get_path_from_id($id, $ext_id, $base_path, $first_div, $sec_div)
 {
     global $bb_cfg;