--- dynamips-0.2.16/common/dynamips_common.h	2016-03-16 05:05:47.000000000 -0400
+++ dynamips-0.2.16/common/dynamips_common.h	2017-02-28 10:47:30.000000000 -0500
@@ -65,6 +65,8 @@
 #define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN
 #elif defined(__arm__) || defined (__aarch64__)
 #define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN
+#elif defined(__s390x__)
+#define ARCH_BYTE_ORDER ARCH_BIG_ENDIAN
 #endif
 
 #ifndef ARCH_BYTE_ORDER