diff --git a/simgear/nasal/naref.h b/simgear/nasal/naref.h
index e52e28ac..66ddedb8 100644
--- a/simgear/nasal/naref.h
+++ b/simgear/nasal/naref.h
@@ -12,11 +12,14 @@
 # define NASAL_NAN64
 #elif defined(_M_IX86) || defined(i386) || defined(__x86_64) || \
       defined(__ia64__) || defined(_M_IA64) || defined(__ARMEL__) || \
-      defined(_M_X64) 
+      defined(_M_X64) || defined(__alpha__) || \
+      (defined(__sh__) && defined(__LITTLE_ENDIAN__))
 # define NASAL_LE
 #elif defined(__sparc) || defined(__ppc__) || defined(__PPC) || \
       defined (__powerpc__) || defined (__powerpc64__) || defined (__alpha__) || \
-      defined(__mips) || defined(__ARMEB__)
+      defined(__mips) || defined(__ARMEB__) || \
+      defined(__hppa__) || defined(__s390__) || defined(__s390x__) || \
+      (defined(__sh__) && !defined(__LITTLE_ENDIAN__))
 # define NASAL_BE
 #else
 # error Unrecognized CPU architecture