diff --git a/include/polarssl/pk.h b/include/polarssl/pk.h
index 251c690..958672b 100644
--- a/include/polarssl/pk.h
+++ b/include/polarssl/pk.h
@@ -188,7 +188,7 @@
                     size_t output_max_len );
 typedef int (*pk_rsa_alt_sign_func)( void *ctx,
                     int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
-                    int mode, int hash_id, unsigned int hashlen,
+                    int mode, md_type_t md_alg, unsigned int hashlen,
                     const unsigned char *hash, unsigned char *sig );
 typedef size_t (*pk_rsa_alt_key_len_func)( void *ctx );
 
diff --git a/include/polarssl/pkcs11.h b/include/polarssl/pkcs11.h
index c0515e6..707d00a 100644
--- a/include/polarssl/pkcs11.h
+++ b/include/polarssl/pkcs11.h
@@ -128,7 +128,7 @@
  */
 int pkcs11_sign( pkcs11_context *ctx,
                     int mode,
-                    int hash_id,
+                    md_type_t md_alg,
                     unsigned int hashlen,
                     const unsigned char *hash,
                     unsigned char *sig );
@@ -146,12 +146,12 @@
 
 static inline int ssl_pkcs11_sign( void *ctx, 
                      int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
-                     int mode, int hash_id, unsigned int hashlen,
+                     int mode, md_type_t md_alg, unsigned int hashlen,
                      const unsigned char *hash, unsigned char *sig )
 {
     ((void) f_rng);
     ((void) p_rng);
-    return pkcs11_sign( (pkcs11_context *) ctx, mode, hash_id,
+    return pkcs11_sign( (pkcs11_context *) ctx, mode, md_alg,
                         hashlen, hash, sig );
 }
 
diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index e51e507..1608df3 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -374,7 +374,7 @@
                         size_t output_max_len ); 
 typedef int (*rsa_sign_func)( void *ctx,
                      int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
-                     int mode, int hash_id, unsigned int hashlen,
+                     int mode, md_type_t md_alg, unsigned int hashlen,
                      const unsigned char *hash, unsigned char *sig );
 typedef size_t (*rsa_key_len_func)( void *ctx );