diff --git a/frameworks/js/napi/nfc_napi_event.cpp b/frameworks/js/napi/nfc_napi_event.cpp
index 9826e52..7e72ef4 100644
--- a/frameworks/js/napi/nfc_napi_event.cpp
+++ b/frameworks/js/napi/nfc_napi_event.cpp
@@ -52,7 +52,7 @@ void NapiEvent::EventNotify(AsyncEventData *asyncEvent)
         napi_open_handle_scope(asyncEvent->env_, &scope);
         if (scope == nullptr) {
             HILOGE("scope is nullptr");
-            napi_close_handle_scope(asyncEvent->env_, scope);
+            delete asyncEvent;
             return;
         }
         napi_value undefine;
diff --git a/interfaces/inner_api/src/nfc_tag_client.cpp b/interfaces/inner_api/src/nfc_tag_client.cpp
index def01d8..0e78397 100644
--- a/interfaces/inner_api/src/nfc_tag_client.cpp
+++ b/interfaces/inner_api/src/nfc_tag_client.cpp
@@ -71,7 +71,7 @@ NfcTagClient::~NfcTagClient()
 const char* NfcTagClient::GetErrCodeString(ErrCode code)
 {
     if ((code >= 0) && (code <= NFC_ERR_MAX)) {
-        for (int i = 0; i < sizeof(g_errCodeMap)/sizeof(ErrCodeMap); ++i) {
+        for (int i = 0; i < static_cast<int>(sizeof(g_errCodeMap)/sizeof(ErrCodeMap)); ++i) {
             if (g_errCodeMap[i].code == code) {
                 return g_errCodeMap[i].str;
             }