diff --git a/lib/registry.js b/lib/registry.js
index cf10632..1f51c4b 100644
--- a/lib/registry.js
+++ b/lib/registry.js
@@ -109,7 +109,8 @@ var api = {
             case windef.REG_VALUE_TYPE.REG_DWORD:
             case windef.REG_VALUE_TYPE.REG_DWORD_BIG_ENDIAN:
             case windef.REG_VALUE_TYPE.REG_DWORD_LITTLE_ENDIAN:
-                buffer = new Buffer(4, value);
+                buffer = Buffer.from(value);
+                byte = ref.alloc(types.LPDWORD, buffer);
                 result = advApi.RegSetValueExA(key.handle.deref(), valueName, null, valueType, byte.deref(), buffer.length);
                 break;
             default: