diff --git a/src/main/java/com/alibaba/fastjson/serializer/JSONSerializer.java b/src/main/java/com/alibaba/fastjson/serializer/JSONSerializer.java
index 64305cde..4a2302b9 100644
--- a/src/main/java/com/alibaba/fastjson/serializer/JSONSerializer.java
+++ b/src/main/java/com/alibaba/fastjson/serializer/JSONSerializer.java
@@ -504,11 +504,7 @@ public ObjectSerializer getObjectWriter(Class<?> clazz) {
                     return superWriter;
                 }
 
-                if (Proxy.isProxyClass(clazz)) {
-                    config.put(clazz, config.createJavaBeanSerializer(clazz));
-                } else {
-                    config.put(clazz, config.createJavaBeanSerializer(clazz));
-                }
+                config.put(clazz, config.createJavaBeanSerializer(clazz));
             }
 
             writer = config.get(clazz);