diff --git a/common/env_nvram.c b/common/env_nvram.c
index 544ce47..b108e6e 100644
--- a/common/env_nvram.c
+++ b/common/env_nvram.c
@@ -94,7 +94,7 @@
 	int	rcode = 0;
 
 	res = (char *)&env_new.data;
-	len = hexport_r(&env_htab, '\0', &res, ENV_SIZE);
+	len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
 	if (len < 0) {
 		error("Cannot export environment: errno = %d\n", errno);
 		return 1;