diff --git a/cryptography/hazmat/backends/openssl/ssl.py b/cryptography/hazmat/backends/openssl/ssl.py
index 2b1fb4a..4322cc7 100644
--- a/cryptography/hazmat/backends/openssl/ssl.py
+++ b/cryptography/hazmat/backends/openssl/ssl.py
@@ -32,6 +32,8 @@
  */
 static const int Cryptography_HAS_OP_NO_COMPRESSION;
 
+static const int Cryptography_HAS_SSL_OP_MSIE_SSLV2_RSA_PADDING;
+
 static const int SSL_FILETYPE_PEM;
 static const int SSL_FILETYPE_ASN1;
 static const int SSL_ERROR_NONE;
@@ -54,6 +56,7 @@
 static const int SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG;
 static const int SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG;
 static const int SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER;
+static const int SSL_OP_MSIE_SSLV2_RSA_PADDING;
 static const int SSL_OP_SSLEAY_080_CLIENT_DH_BUG;
 static const int SSL_OP_TLS_D5_BUG;
 static const int SSL_OP_TLS_BLOCK_PADDING_BUG;
@@ -294,6 +297,13 @@
 static const long Cryptography_HAS_OP_NO_COMPRESSION = 0;
 const long SSL_OP_NO_COMPRESSION = 0;
 #endif
+
+#ifdef SSL_OP_MSIE_SSLV2_RSA_PADDING
+static const long Cryptography_HAS_SSL_OP_MSIE_SSLV2_RSA_PADDING = 1;
+#else
+static const long Cryptography_HAS_SSL_OP_MSIE_SSLV2_RSA_PADDING = 0;
+const long SSL_OP_MSIE_SSLV2_RSA_PADDING = 0;
+#endif
 """
 
 CONDITIONAL_NAMES = {
@@ -317,4 +327,7 @@
         "SSL_OP_NO_COMPRESSION",
     ],
 
+    "Cryptography_HAS_SSL_OP_MSIE_SSLV2_RSA_PADDING": [
+        "SSL_OP_MSIE_SSLV2_RSA_PADDING",
+    ],
 }