diff --git a/helpers/format.js b/helpers/format.js
index 63970fe0e7..67c9759379 100644
--- a/helpers/format.js
+++ b/helpers/format.js
@@ -85,6 +85,7 @@ async function main() {
         }
         delete unsorted[channel.url]
         stats.removed++
+        stats.duplicates++
       }
     }