diff --git a/llvm/include/llvm/Object/MachOUniversal.h b/llvm/include/llvm/Object/MachOUniversal.h
--- a/llvm/include/llvm/Object/MachOUniversal.h
+++ b/llvm/include/llvm/Object/MachOUniversal.h
@@ -66,13 +66,13 @@
       else // Parent->getMagic() == MachO::FAT_MAGIC_64
         return Header64.cpusubtype;
     }
-    uint32_t getOffset() const {
+    uint64_t getOffset() const {
       if (Parent->getMagic() == MachO::FAT_MAGIC)
         return Header.offset;
       else // Parent->getMagic() == MachO::FAT_MAGIC_64
         return Header64.offset;
     }
-    uint32_t getSize() const {
+    uint64_t getSize() const {
       if (Parent->getMagic() == MachO::FAT_MAGIC)
         return Header.size;
       else // Parent->getMagic() == MachO::FAT_MAGIC_64