diff --git a/include/llvm/BinaryFormat/MachO.h b/include/llvm/BinaryFormat/MachO.h
index e0258b1..e3b4d40 100644
--- a/include/llvm/BinaryFormat/MachO.h
+++ b/include/llvm/BinaryFormat/MachO.h
@@ -942,8 +942,13 @@
 // Structs from <mach-o/reloc.h>
 struct relocation_info {
   int32_t r_address;
+#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && (BYTE_ORDER == BIG_ENDIAN)
+  uint32_t r_type : 4,  r_extern : 1, r_length : 2, r_pcrel : 1,
+      r_symbolnum : 24;
+#else
   uint32_t r_symbolnum : 24, r_pcrel : 1, r_length : 2, r_extern : 1,
       r_type : 4;
+#endif
 };
 
 struct scattered_relocation_info {