diff --git a/platform/src/kni_acceptor.cpp b/platform/src/kni_acceptor.cpp
index 0c63407..39dc425 100644
--- a/platform/src/kni_acceptor.cpp
+++ b/platform/src/kni_acceptor.cpp
@@ -70,7 +70,7 @@ struct kni_tlv_header
 {
 	uint16_t magic;
 	uint16_t counts;
-};
+} __attribute__((__packed__));
 
 struct kni_tlv_info
 {
@@ -80,11 +80,11 @@ struct kni_tlv_info
 	union
 	{
 		uint8_t value_as_raw[0];
-		uint16_t value_as_uint16;
-		uint32_t value_as_uint32;
-		uint16_t value_as_uint64;
+		uint16_t value_as_uint16[0];
+		uint32_t value_as_uint32[0];
+		uint64_t value_as_uint64[0];
 	};
-};
+} __attribute__((__packed__));
 
 struct kni_acceptor
 {
@@ -166,7 +166,7 @@ static int __kni_parse_tlv_data(struct kni_acceptor * ctx,
 			/* VALUE is uint32_t, length is 4 */
 			case KNI_TLV_TYPE_PROTOCOL:
 			{
-				uint32_t __value = tlv_info->value_as_uint32;
+				uint32_t __value = tlv_info->value_as_uint32[0];
 				if (__value == KNI_TLV_VALUE_HTTP)
 				{
 					out_para->session_type = STREAM_PROTO_PLAIN;
@@ -182,7 +182,7 @@ static int __kni_parse_tlv_data(struct kni_acceptor * ctx,
 				/* VALUE is uint32_t, length is 4 */
 			case KNI_TLV_TYPE_KEYRING_ID:
 			{
-				uint32_t __value = tlv_info->value_as_uint32;
+				uint32_t __value = tlv_info->value_as_uint32[0];
 				out_para->keyring_id = __value;
 				assert(tlv_info->len == sizeof(uint32_t));
 				break;