diff --git a/app/www/annotate.js b/app/www/annotate.js
index 743e388..d2f2f8d 100644
--- a/app/www/annotate.js
+++ b/app/www/annotate.js
@@ -310,7 +310,7 @@ class Annotator extends EventTarget {
         if (tag && tag.hasOwnProperty('color') && tag.color) {
             return tag.color;
         }
-        if (tag && tag.hasOwnProperty('parent')) {
+        if (tag && tag.hasOwnProperty('parent') && tag.parent) {
             return this.getColorForTag(tag['parent'].id);
         }
         return 'black';