diff --git a/index.php b/index.php
index e0c2fa0..6b95b49 100755
--- a/index.php
+++ b/index.php
@@ -145,7 +145,7 @@
                 // We start by checking what content translations we actually have:
                 $langs = [];
                 foreach (kirby()->languages() as $lang){
-                    if(!empty(F::modified($this->contentFile($lang->code())))) { $langs[] = $lang; }
+                    if(!empty(F::modified($this->translation($lang->code())->contentFile()))) { $langs[] = $lang; }
                 }
                 // add the existing language page URLs to the sitemap:
                 foreach ($langs as $lang) {
@@ -153,7 +153,7 @@
                     // check whether the page should be included in sitemap:
                     if(!$this->showInSitemap($code)){ continue; }
                     $url = $this->url($code);
-                    $pgMap[$url]['mod'] = F::modified($this->contentFile($code),'c','date');
+                    $pgMap[$url]['mod'] = F::modified($this->translation($code)->contentFile(),'c','date');
                     $pgMap[$url]['lang'] = [];
                     foreach ($langs as $l) {
                         // try to get the locale set by the user -