--- a/boost/detail/endian.hpp
+++ b/boost/detail/endian.hpp
@@ -57,7 +57,7 @@
    || defined(_POWER) || defined(__powerpc__) \
    || defined(__ppc__) || defined(__hpux) || defined(__hppa) \
    || defined(_MIPSEB) || defined(_POWER) \
-   || defined(__s390__)
+   || defined(__s390__) || defined(__ARMEB__)
 # define BOOST_BIG_ENDIAN
 # define BOOST_BYTE_ORDER 4321
 #elif defined(__i386__) || defined(__alpha__) \
@@ -66,7 +66,9 @@
    || defined(_M_ALPHA) || defined(__amd64) \
    || defined(__amd64__) || defined(_M_AMD64) \
    || defined(__x86_64) || defined(__x86_64__) \
-   || defined(_M_X64) || defined(__bfin__)
+   || defined(_M_X64) || defined(__bfin__) \
+   || defined(__ARMEL__) \
+   || defined(_WIN32) // ARM Windows CE don't define anything reasonably unique, but there are no big-endian Windows versions
 
 # define BOOST_LITTLE_ENDIAN
 # define BOOST_BYTE_ORDER 1234