diff --git a/src/com/wentch/redkale/convert/bson/BsonFactory.java b/src/com/wentch/redkale/convert/bson/BsonFactory.java
index dca851de1..8097f6cab 100644
--- a/src/com/wentch/redkale/convert/bson/BsonFactory.java
+++ b/src/com/wentch/redkale/convert/bson/BsonFactory.java
@@ -5,8 +5,7 @@
  */
 package com.wentch.redkale.convert.bson;
 
-import com.wentch.redkale.convert.ConvertType;
-import com.wentch.redkale.convert.Factory;
+import com.wentch.redkale.convert.*;
 import java.io.Serializable;
 
 /**
@@ -17,9 +16,13 @@ public final class BsonFactory extends Factory<BsonReader, BsonWriter> {
 
     private static final BsonFactory instance = new BsonFactory(null, Boolean.getBoolean("convert.bson.tiny"));
 
+    static final Decodeable objectDecoder = instance.loadDecoder(Object.class);
+
+    static final Encodeable objectEncoder = instance.loadEncoder(Object.class);
+
     static {
-        instance.register(Serializable.class, instance.loadDecoder(Object.class));
-        instance.register(Serializable.class, instance.loadEncoder(Object.class));
+        instance.register(Serializable.class, objectDecoder);
+        instance.register(Serializable.class, objectEncoder);
     }
 
     private BsonFactory(BsonFactory parent, boolean tiny) {
diff --git a/src/com/wentch/redkale/convert/bson/BsonReader.java b/src/com/wentch/redkale/convert/bson/BsonReader.java
index 2180886da..d6873e166 100644
--- a/src/com/wentch/redkale/convert/bson/BsonReader.java
+++ b/src/com/wentch/redkale/convert/bson/BsonReader.java
@@ -125,6 +125,9 @@ public final class BsonReader implements Reader {
             case 109:
                 StringArraySimpledCoder.instance.convertFrom(this);
                 break;
+            case 127:
+                BsonFactory.objectDecoder.convertFrom(this);
+                break;
         }
     }