diff --git a/packages/engine/src/ot/producer.ts b/packages/engine/src/ot/producer.ts
index 4c7ab213..b2d9bbb6 100644
--- a/packages/engine/src/ot/producer.ts
+++ b/packages/engine/src/ot/producer.ts
@@ -474,7 +474,7 @@ class Producer extends EventEmitter2 {
 										ldOp.oldPath || [],
 									);
 								}
-								const strP = op.p.join(',');
+								const strP = aOp.p.join(',');
 								const strLdP = ldOp.p.join(',');
 								// 相等，不需要增加
 								if (!has && strP === strLdP) {