diff --git a/lib/bcoin/wallet.js b/lib/bcoin/wallet.js
index d826ac0e..e3cf7d92 100644
--- a/lib/bcoin/wallet.js
+++ b/lib/bcoin/wallet.js
@@ -671,11 +671,11 @@ Wallet.prototype.scan = function scan(txByAddress, callback) {
     if (err)
       return callback(err);
 
-    if (depth.changeDepth >= this.changeDepth)
-      this.setChangeDepth(depth.changeDepth + 1);
+    if (depth.changeDepth >= self.changeDepth)
+      self.setChangeDepth(depth.changeDepth + 1);
 
-    if (depth.receiveDepth >= this.receiveDepth)
-      this.setReceiveDepth(depth.receiveDepth + 1);
+    if (depth.receiveDepth >= self.receiveDepth)
+      self.setReceiveDepth(depth.receiveDepth + 1);
 
     return callback(null, self);
   });