diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index c48a89d..c1f5ebe 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -350,6 +350,7 @@
     /*
      * Handshake specific crypto variables
      */
+    int sig_alg;                        /*!<  Signature algorithm     */
 #if defined(POLARSSL_DHM_C)
     dhm_context dhm_ctx;                /*!<  DHM key exchange        */
 #endif