--- a/include/liblas/detail/endian.hpp
+++ b/include/liblas/detail/endian.hpp
@@ -88,6 +88,7 @@
    || defined(_M_ALPHA) || defined(__amd64) \
    || defined(__amd64__) || defined(_M_AMD64) \
    || defined(__x86_64) || defined(__x86_64__) \
+   || defined(__arm64) || defined(__arm64__) || defined(__aarch64__)\
    || defined(_M_X64)
 
 # define LIBLAS_LITTLE_ENDIAN