diff --git a/binding.gyp b/binding.gyp
index 2930e9e..4b753e5 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -10,6 +10,7 @@
                 "src/crypto/crypto-ops.c",
                 "src/crypto/crypto-ops-data.c",
                 "src/crypto/hash.c",
+                "src/crypto/keccak.c",
                 "src/common/base58.cpp",
             ],
             "include_dirs": [
diff --git a/src/common/pod-class.h b/src/common/pod-class.h
new file mode 100644
index 0000000..c07edb2
--- /dev/null
+++ b/src/common/pod-class.h
@@ -0,0 +1,11 @@
+// Copyright (c) 2012-2013 The Cryptonote developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#pragma once
+
+#if defined(_MSC_VER)
+#define POD_CLASS struct
+#else
+#define POD_CLASS class
+#endif