diff --git a/webui/static/script.js b/webui/static/script.js
index ee61b274..67f7efeb 100644
--- a/webui/static/script.js
+++ b/webui/static/script.js
@@ -22298,6 +22298,9 @@ async function startYouTubeDiscovery(urlHash) {
             state.phase = 'discovering';
         }
 
+        // Update modal buttons to show "Discovering..." instead of "Start Discovery"
+        updateYouTubeModalButtons(urlHash, 'discovering');
+
         // Start polling for progress
         startYouTubeDiscoveryPolling(urlHash);