diff -r 2470f5d4e269 Modules/_ssl.c
--- a/Modules/_ssl.c	Thu Mar 20 06:44:33 2014 -0700
+++ b/Modules/_ssl.c	Thu Mar 20 13:59:38 2014 -0400
@@ -2055,6 +2056,12 @@
     /* Defaults */
     SSL_CTX_set_verify(self->ctx, SSL_VERIFY_NONE, NULL);
     options = SSL_OP_ALL & ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;
+
+#ifdef SSL_OP_NO_COMPRESSION
+    /* Disable TLS compression by default */
+    options |= SSL_OP_NO_COMPRESSION;
+#endif
+
     if (proto_version != PY_SSL_VERSION_SSL2)
         options |= SSL_OP_NO_SSLv2;
     SSL_CTX_set_options(self->ctx, options);