diff --git a/src/service/linux_nfc_api.cpp b/src/service/linux_nfc_api.cpp
index e9229de..5d55c48 100644
--- a/src/service/linux_nfc_api.cpp
+++ b/src/service/linux_nfc_api.cpp
@@ -379,7 +379,7 @@ int doWriteT4tData(unsigned char *command, unsigned char *ndef_buffer, int ndef_
 int doReadT4tData(unsigned char *command, unsigned char *ndef_buffer, int *ndef_buffer_length)
 {
     int ret = 0;
-    if (ndef_buffer == NULL || ndef_buffer_length <= 0) {
+    if (ndef_buffer == NULL || ndef_buffer_length == NULL || *ndef_buffer_length <= 0) {
       NXPLOG_API_E ("%s: invalide buffer!", __FUNCTION__);
       return NFA_STATUS_FAILED;
     }