diff --git a/webui/static/pages-extra.js b/webui/static/pages-extra.js
index d9a0a87b..c132875f 100644
--- a/webui/static/pages-extra.js
+++ b/webui/static/pages-extra.js
@@ -2876,8 +2876,10 @@ function _adlRenderBatchHistory() {
             youtube: '255, 0, 0', tidal: '0, 255, 255', deezer: '162, 73, 255',
             beatport: '148, 252, 19', listenbrainz: '255, 134, 0'
         };
-        const dotColor = sourceColors[h.source] || sourceColors[h.source_page] || '255, 255, 255';
-        const histDot = `<span class="adl-batch-history-dot" style="background:rgba(${dotColor}, 0.6)"></span>`;
+        const dotSource = h.source || h.source_page || '';
+        const dotColor = sourceColors[dotSource] || '255, 255, 255';
+        const dotTip = dotSource ? `Source: ${dotSource}` : 'Unknown source';
+        const histDot = `<span class="adl-batch-history-dot" style="background:rgba(${dotColor}, 0.6)" title="${dotTip}"></span>`;
 
         // Optional thumbnail
         const thumb = h.thumb_url