diff --git a/include/polarssl/ssl_ciphersuites.h b/include/polarssl/ssl_ciphersuites.h
index f0519ca..2666b3b 100644
--- a/include/polarssl/ssl_ciphersuites.h
+++ b/include/polarssl/ssl_ciphersuites.h
@@ -290,6 +290,7 @@
 
 #if defined(POLARSSL_PK_C)
 pk_type_t ssl_get_ciphersuite_sig_pk_alg( const ssl_ciphersuite_t *info );
+pk_type_t ssl_get_ciphersuite_sig_alg( const ssl_ciphersuite_t *info );
 #endif
 
 int ssl_ciphersuite_uses_ec( const ssl_ciphersuite_t *info );