diff --git a/app/static/js/ascroll.js b/app/static/js/ascroll.js
index 3377f6a..0ec94a1 100755
--- a/app/static/js/ascroll.js
+++ b/app/static/js/ascroll.js
@@ -292,6 +292,9 @@ async function loadClips(annotations) {
 
         annotations.forEach(annotation => {
             var clipId = annotation.id.split('/')[0] + '/' + annotation.in.toFixed(3)  + '-'+ annotation.out.toFixed(3)
+            if (!colors[clipId]) {
+                return
+            }
             clips[clipId] = clips[clipId] || {
                 id: clipId,
                 color1:  colors[clipId],