diff --git a/frontend/src/ketr-photos/ketr-photos.html b/frontend/src/ketr-photos/ketr-photos.html
index 3c67b6e..2a0fe8d 100755
--- a/frontend/src/ketr-photos/ketr-photos.html
+++ b/frontend/src/ketr-photos/ketr-photos.html
@@ -1064,7 +1064,11 @@
           }
 
           photos.forEach(function(photo) {
-            var year = (photo.taken || photo.modified || photo.added).replace(/^(....).*$/, "$1");
+            var year = (photo.taken || photo.modified || photo.added || "").replace(/^(....).*$/, "$1");
+            if (!year) {
+              console.log("Partial photo record received: " + photo.id);
+              return;
+            }
             if (this.years.indexOf(year) == -1) {
               this.push("years", year);
             }