diff --git a/templates/admin.html b/templates/admin.html
index 45d372f..c4be2b4 100644
--- a/templates/admin.html
+++ b/templates/admin.html
@@ -61,7 +61,7 @@
         </p>
         
         <div class="action-row">
-            <a id="preview_link" href="/zeiten?test=1" target="_blank" class="btn" style="background: #2ed573;">➔ Vorschau mit Test-Hintergrund</a>
+            <a id="preview_link" href="{{ url_for('public_table') }}?test=1" target="_blank" class="btn" style="background: #2ed573;">➔ Vorschau mit Test-Hintergrund</a>
         </div>
     </div>
 
@@ -81,7 +81,8 @@
     function updateUrl() {
         const days = parseInt(daysInput.value) || 0;
         const lines = parseInt(linesInput.value) || 0;
-        
+        const baseUrl = "{{ url_for('public_table') }}";
+
         let url = "/zeiten?test=1";
         
         if (lines > 0) {
@@ -90,7 +91,7 @@
             url += `&days=${days}`;
         }
         
-        previewLink.href = url;
+        previewLink.href = `${baseUrl}?test=1${params}`;
     }
 
     daysInput.addEventListener('input', updateUrl);