diff --git a/cypress/platform/marker_unique_id.html b/cypress/platform/marker_unique_id.html
index e49169c556..98c2c7f4df 100644
--- a/cypress/platform/marker_unique_id.html
+++ b/cypress/platform/marker_unique_id.html
@@ -42,7 +42,8 @@ <h1>Example</h1>
     </pre>
     <script type="module">
       import mermaid from './mermaid.esm.mjs';
-      mermaid.initialize({ startOnLoad: true, logLevel: 0 });
+      mermaid.initialize({ startOnLoad: false, logLevel: 0 });
+      await mermaid.run();
 
       if (window.Cypress) {
         window.rendered = true;