diff --git a/src/com/wentch/redkale/convert/json/JsonWriter.java b/src/com/wentch/redkale/convert/json/JsonWriter.java
index c51867215..c62e32120 100644
--- a/src/com/wentch/redkale/convert/json/JsonWriter.java
+++ b/src/com/wentch/redkale/convert/json/JsonWriter.java
@@ -145,9 +145,7 @@ public class JsonWriter implements Writer {
     @Override
     public void writeField(boolean comma, Attribute attribute) {
         if (comma) writeTo(',');
-        writeTo('"');
-        writeSmallString(attribute.field());
-        writeTo('"');
+        writeTo(true, attribute.field());
         writeTo(':');
     }