diff -up simgear-3.6.0/simgear/nasal/naref.h.aarch64 simgear-3.6.0/simgear/nasal/naref.h
--- simgear-3.6.0/simgear/nasal/naref.h.aarch64	2015-09-10 16:33:06.288596457 -0400
+++ simgear-3.6.0/simgear/nasal/naref.h	2015-09-10 16:36:41.912146487 -0400
@@ -19,7 +19,7 @@
 # endif
 #elif defined(_M_IX86) || defined(__i386) || defined(__x86_64) || \
       defined(__ia64__) || defined(_M_IA64) || defined(__ARMEL__) || \
-      defined(_M_X64) || defined(_M_ARM)
+      defined(_M_X64) || defined(_M_ARM) || defined(__aarch64__)
 # define NASAL_LE
 #elif defined(__sparc) || defined(__ARMEB__) || \
       defined(__hppa__) || defined(__s390__) || defined(__s390x__)