diff --git a/OpenSSL/py3k.h b/OpenSSL/py3k.h
new file mode 100644
index 0000000..a9e8e5c
--- /dev/null
+++ b/OpenSSL/py3k.h
@@ -0,0 +1,34 @@
+#ifndef PyOpenSSL_PY3K_H_
+#define PyOpenSSL_PY3K_H_
+
+#if (PY_VERSION_HEX >= 0x03000000)
+
+#define PY3
+
+#define PyOpenSSL_MODINIT(name)                 \
+PyMODINIT_FUNC \
+PyInit_##name(void)
+
+#define PyText_FromString PyUnicode_FromString
+
+#else /* (PY_VERSION_HEX >= 0x03000000) */
+
+#define PyBytes_FromStringAndSize PyString_FromStringAndSize
+
+#define PyLong_FromLong PyInt_FromLong
+
+#define PyBytes_Size PyString_Size
+#define PyBytes_Check PyString_Check
+#define PyBytes_AsString PyString_AsString
+#define PyBytes_FromStringAndSize PyString_FromStringAndSize
+
+#define PyText_FromString PyString_FromString
+
+#define PyOpenSSL_MODINIT(name)
+void \
+init##name(void)
+
+#endif /* (PY_VERSION_HEX >= 0x03000000) */
+
+#endif /* PyOpenSSL_PY3K_H_ */
+