diff --git a/packages/memory/src/memory.ts b/packages/memory/src/memory.ts
index ca2b70eeaeb2..9841af561401 100644
--- a/packages/memory/src/memory.ts
+++ b/packages/memory/src/memory.ts
@@ -225,6 +225,7 @@ export namespace Memory {
           operationCount: 0,
           added: 0,
           removed: 0,
+          ids: [],
           skipped: [],
           index: {
             text: index,