diff --git a/src/server/ns_turn_server.c b/src/server/ns_turn_server.c
index 531ad42..648ffd3 100644
--- a/src/server/ns_turn_server.c
+++ b/src/server/ns_turn_server.c
@@ -4658,7 +4658,7 @@ static int read_client_connection(turn_turnserver *server,
 					if(st==TLS_SOCKET) {
 						proto = "HTTPS";
 						set_ioa_socket_app_type(ss->client_socket,HTTPS_CLIENT_SOCKET);
-						TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "%s: %s (%s %s) request: %s\n", __FUNCTION__, proto, get_ioa_socket_cipher(ss->client_socket), get_ioa_socket_ssl_method(ss->client_socket), ioa_network_buffer_get_size(in_buffer->nbh));
+						TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "%s: %s (%s %s) request: %zu\n", __FUNCTION__, proto, get_ioa_socket_cipher(ss->client_socket), get_ioa_socket_ssl_method(ss->client_socket), ioa_network_buffer_get_size(in_buffer->nbh));
 						if(server->send_https_socket) {
 							TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "%s socket to be detached: 0x%lx, st=%d, sat=%d\n", __FUNCTION__,(long)ss->client_socket, get_ioa_socket_type(ss->client_socket), get_ioa_socket_app_type(ss->client_socket));
 							ioa_socket_handle new_s = detach_ioa_socket(ss->client_socket);
@@ -4671,7 +4671,7 @@ static int read_client_connection(turn_turnserver *server,
 					} else {
 						set_ioa_socket_app_type(ss->client_socket,HTTP_CLIENT_SOCKET);
 						if(server->verbose) {
-							TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "%s: %s request: %s\n", __FUNCTION__, proto, ioa_network_buffer_get_size(in_buffer->nbh));
+							TURN_LOG_FUNC(TURN_LOG_LEVEL_INFO, "%s: %s request: %zu\n", __FUNCTION__, proto, ioa_network_buffer_get_size(in_buffer->nbh));
 						}
 						handle_http_echo(ss->client_socket);
 					}