1 files changed, 1 insertions, 1 deletions
diff --git a/zendian.h b/zendian.h
index 5087034..5921abb 100644
--- a/zendian.h
+++ b/zendian.h
@@ -27,7 +27,7 @@
 #elif defined(WIN32) || defined(_WIN32)
 # define LITTLE_ENDIAN 1234
 # define BIG_ENDIAN 4321
-# if defined(_M_IX86) || defined(_M_AMD64) || defined(_M_IA64) || defined (_M_ARM)
+# if defined(_M_IX86) || defined(_M_AMD64) || defined(_M_IA64) || defined (_M_ARM) || defined (_M_ARM64)
 #  define BYTE_ORDER LITTLE_ENDIAN
 # else
 #  error Unknown endianness!