diff --git a/app/Models/Application.php b/app/Models/Application.php
index 59b46f7e7..d6c222a97 100644
--- a/app/Models/Application.php
+++ b/app/Models/Application.php
@@ -1659,7 +1659,7 @@ public function parseContainerLabels(?ApplicationPreview $preview = null)
             $this->custom_labels = base64_encode($customLabels);
         }
         $customLabels = base64_decode($this->custom_labels);
-        if (mb_detect_encoding($customLabels, 'ASCII', true) === false) {
+        if (mb_detect_encoding($customLabels, 'UTF-8', true) === false) {
             $customLabels = str(implode('|coolify|', generateLabelsApplication($this, $preview)))->replace('|coolify|', "\n");
         }
         $this->custom_labels = base64_encode($customLabels);