diff --git a/administrator/components/com_templates/src/Model/TemplateModel.php b/administrator/components/com_templates/src/Model/TemplateModel.php
index 0d13277482547..d17b27b7cb3cf 100644
--- a/administrator/components/com_templates/src/Model/TemplateModel.php
+++ b/administrator/components/com_templates/src/Model/TemplateModel.php
@@ -959,7 +959,7 @@ public function save($data)
         $data['source'] = str_replace(["\r\n", "\r"], "\n", $data['source']);
 
         // If the asset file for the template ensure we have valid template so we don't instantly destroy it
-        if ($fileName === '/joomla.asset.json' && json_decode($data['source']) === null) {
+        if (str_ends_with($fileName, '/joomla.asset.json') && json_decode($data['source']) === null) {
             $this->setError(Text::_('COM_TEMPLATES_ERROR_ASSET_FILE_INVALID_JSON'));
 
             return false;