-

diff --git a/Modules/_ssl.c b/Modules/_ssl.c
index 0e6abda..f28979a 100644
--- a/Modules/_ssl.c
+++ b/Modules/_ssl.c
@@ -2218,6 +2218,8 @@ context_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
     SSL_CTX_set_session_id_context(self->ctx, (const unsigned char *) SID_CTX,
                                    sizeof(SID_CTX));
 #undef SID_CTX
+    X509_STORE *store = SSL_CTX_get_cert_store(self->ctx);
+    X509_STORE_set_flags(store, X509_V_FLAG_TRUSTED_FIRST);
 
     return (PyObject *)self;
 }