diff --git a/context/attributes.go b/context/attributes.go
index d440050..696fc83 100644
--- a/context/attributes.go
+++ b/context/attributes.go
@@ -16,8 +16,9 @@ type AttributeManagers struct {
 
 func (am *AttributeManagers) Init() {
 	if nil == am.attributes {
-		am.attributes = make(map[string]interface{})
+		am.Destroy()
 	}
+	am.attributes = make(map[string]interface{})
 }
 
 func (am *AttributeManagers) SetAttribute(key string, value interface{}) {
@@ -62,7 +63,7 @@ func (am *AttributeManagers) Contains(key string) (exist bool) {
 }
 
 func (am *AttributeManagers) Destroy() {
-	if nil == am.attributes {
+	if nil != am.attributes {
 		am.attributes = nil
 	}
 }