diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 6ff088f..662f093 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1199,6 +1199,10 @@
   return X509_VERIFY_PARAM_get_depth(s->param);
 }
 
+int SSL_get_extms_support(const SSL *s) {
+  return s->s3->tmp.extended_master_secret == 1;
+}
+
 int (*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *) {
   return s->verify_callback;
 }