diff --git a/admin-dashboard.html b/admin-dashboard.html
index ee1244b..13f3977 100644
--- a/admin-dashboard.html
+++ b/admin-dashboard.html
@@ -1858,7 +1858,7 @@ function updateBannerPreview() {
                     text-align: center; 
                     color: #666; 
                     font-style: italic;
-                    ${template.textStyle || ''}
+                    ${template?.textStyle || ''}
                 ">
                     ${bannerText || 'Náhled banneru (pro zobrazení šablon nahrajte obrázek)'}
                 </div>