diff --git a/include/polarssl/x509.h b/include/polarssl/x509.h
index bd34617..583cb83 100644
--- a/include/polarssl/x509.h
+++ b/include/polarssl/x509.h
@@ -278,7 +278,7 @@
                        x509_buf *alg );
 int x509_get_alg( unsigned char **p, const unsigned char *end,
                   x509_buf *alg, x509_buf *params );
-#if defined(POLARSSL_RSASSA_PSS_CERTIFICATES)
+#if defined(POLARSSL_X509_RSASSA_PSS_SUPPORT)
 int x509_get_rsassa_pss_params( const x509_buf *params,
                                 md_type_t *md_alg, md_type_t *mgf_md,
                                 int *salt_len );