diff --git a/src/gquic_process.cpp b/src/gquic_process.cpp
index da1e810..0f185ca 100644
--- a/src/gquic_process.cpp
+++ b/src/gquic_process.cpp
@@ -1381,6 +1381,10 @@ unsigned int quic_protocol_identify(struct streaminfo *a_stream, void *a_packet,
 				memcpy(out_sni, _context->quic_info.client_hello->ext_tags[_context->quic_info.client_hello->sni_idx].value, len);
 				(*out_sni_len)=len;
 			}
+			else
+			{
+				(*out_sni_len)=0;
+			}
 
 			if(_context->quic_info.client_hello->ua_idx!=0xFF)
 			{
@@ -1388,6 +1392,10 @@ unsigned int quic_protocol_identify(struct streaminfo *a_stream, void *a_packet,
 				memcpy(out_ua, _context->quic_info.client_hello->ext_tags[_context->quic_info.client_hello->ua_idx].value, len);
 				(*out_ua_len)=len;
 			}
+			else
+			{
+				(*out_ua_len)=0;
+			}
 			
 			quic_version=_context->quic_info.quic_hdr.quic_version;
 		}