diff --git a/src/js/core/buffer_maintainer.js b/src/js/core/buffer_maintainer.js
index 6da69b30..ab490490 100644
--- a/src/js/core/buffer_maintainer.js
+++ b/src/js/core/buffer_maintainer.js
@@ -99,7 +99,7 @@ export class BufferMaintainer {
             ")",
 
             "(",
-            (bufferStats.backlog + "").padStart(4),
+            (bufferStats.backlogSize + "").padStart(4),
             "backlog",
             ")",