diff --git a/include/llvm/Object/ArchiveWriter.h b/include/llvm/Object/ArchiveWriter.h
index 71b45293b2b..5fc1e1b1236 100644
--- a/include/llvm/Object/ArchiveWriter.h
+++ b/include/llvm/Object/ArchiveWriter.h
@@ -38,7 +38,7 @@ struct NewArchiveMember {
 };
 
 std::error_code
-writeArchive(StringRef ArcName, std::vector<NewArchiveMember> &NewMembers,
+writeArchive(StringRef ArcName, ArrayRef<NewArchiveMember> NewMembers,
              bool WriteSymtab, object::Archive::Kind Kind, bool Deterministic,
              bool Thin, std::unique_ptr<MemoryBuffer> OldArchiveBuf = nullptr);
 }
diff --git a/lib/Object/ArchiveWriter.cpp b/lib/Object/ArchiveWriter.cpp
index a6b712c1627..ab86d8dbbcc 100644
--- a/lib/Object/ArchiveWriter.cpp
+++ b/lib/Object/ArchiveWriter.cpp
@@ -377,7 +377,7 @@ writeSymbolTable(raw_fd_ostream &Out, object::Archive::Kind Kind,
 }
 
 std::error_code
-llvm::writeArchive(StringRef ArcName, std::vector<NewArchiveMember> &NewMembers,
+llvm::writeArchive(StringRef ArcName, ArrayRef<NewArchiveMember> NewMembers,
                    bool WriteSymtab, object::Archive::Kind Kind,
                    bool Deterministic, bool Thin,
                    std::unique_ptr<MemoryBuffer> OldArchiveBuf) {