diff --git a/package/system/mtd/src/mtd.c b/package/system/mtd/src/mtd.c
index 822e466f47..91e169eb41 100644
--- a/package/system/mtd/src/mtd.c
+++ b/package/system/mtd/src/mtd.c
@@ -23,6 +23,7 @@
 
 #define _GNU_SOURCE
 #include <byteswap.h>
+#include <endian.h>
 #include <limits.h>
 #include <unistd.h>
 #include <stdlib.h>
diff --git a/package/system/mtd/src/seama.c b/package/system/mtd/src/seama.c
index bcda321918..1f66adc439 100644
--- a/package/system/mtd/src/seama.c
+++ b/package/system/mtd/src/seama.c
@@ -22,6 +22,7 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
+#include <endian.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stddef.h>