diff --git a/sys/cddl/contrib/opensolaris/common/nvpair/nvpair.c b/sys/cddl/contrib/opensolaris/common/nvpair/nvpair.c
index a1e61904e68b..d3d5bed525ab 100644
--- a/sys/cddl/contrib/opensolaris/common/nvpair/nvpair.c
+++ b/sys/cddl/contrib/opensolaris/common/nvpair/nvpair.c
@@ -1918,7 +1918,7 @@ nvlist_common(nvlist_t *nvl, char *buf, size_t *buflen, int encoding,
 	int err = 0;
 	nvstream_t nvs;
 	int nvl_endian;
-#ifdef	_LITTLE_ENDIAN
+#if BYTE_ORDER == _LITTLE_ENDIAN
 	int host_endian = 1;
 #else
 	int host_endian = 0;
diff --git a/sys/contrib/opensolaris/common/nvpair/nvpair.c b/sys/contrib/opensolaris/common/nvpair/nvpair.c
index a1e61904e68b..d3d5bed525ab 100644
--- a/sys/contrib/opensolaris/common/nvpair/nvpair.c
+++ b/sys/contrib/opensolaris/common/nvpair/nvpair.c
@@ -1918,7 +1918,7 @@ nvlist_common(nvlist_t *nvl, char *buf, size_t *buflen, int encoding,
 	int err = 0;
 	nvstream_t nvs;
 	int nvl_endian;
-#ifdef	_LITTLE_ENDIAN
+#if BYTE_ORDER == _LITTLE_ENDIAN
 	int host_endian = 1;
 #else
 	int host_endian = 0;