diff --git a/message.go b/message.go
index 2a78277..4036ad9 100644
--- a/message.go
+++ b/message.go
@@ -10,7 +10,7 @@
 )
 
 type MessageWriter struct {
-	FuncNo      int `json: "funcno"`
+	FuncNo      int `json:"funcno"`
 	Attributes  map[string]interface{}
 	ColumnNames []string
 	ColumnDescs []string