diff --git a/gpt-utils.c b/gpt-utils.c
index baa4ac5..097fede 100644
--- a/gpt-utils.c
+++ b/gpt-utils.c
@@ -35,7 +35,6 @@
 #include <ctype.h>
 #include <stdlib.h>
 #include <dirent.h>
-#include <endian.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
diff --git a/ufs-bsg.c b/ufs-bsg.c
index 05c8885..ef505d2 100644
--- a/ufs-bsg.c
+++ b/ufs-bsg.c
@@ -27,6 +27,7 @@
  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#define _DEFAULT_SOURCE
 #include <linux/bsg.h>
 #include <scsi/scsi_bsg_ufs.h>
 #include <endian.h>