diff --git a/src/sync/SyncMessageService.ts b/src/sync/SyncMessageService.ts
index 0bf6bd0..9cdce37 100644
--- a/src/sync/SyncMessageService.ts
+++ b/src/sync/SyncMessageService.ts
@@ -147,10 +147,13 @@ export class SyncMessageService extends Service<proto.ISyncMsg, proto.SyncMsg> {
     logootSAddMsg,
     logootSDelMsg,
   }: proto.RichLogootSOperationMsg): RichLogootSOperation {
+    const addOpe = LogootSAdd.fromPlain(logootSAddMsg)
+    const delOpe = LogootSDel.fromPlain(logootSDelMsg)
+    console.log('operation :', addOpe, delOpe)
     return RichLogootSOperation.fromPlain({
       id,
       clock,
-      logootSOp: logootSAddMsg || logootSDelMsg,
+      logootSOp: addOpe || delOpe,
       dependencies,
     }) as RichLogootSOperation
   }