diff --git a/library/x509_csr.c b/library/x509_csr.c
index 1c70a33..529e7e4 100644
--- a/library/x509_csr.c
+++ b/library/x509_csr.c
@@ -420,7 +420,7 @@
 
     pk_free( &csr->pk );
 
-#if defined(POLARSSL_RSASSA_PSS_CERTIFICATES)
+#if defined(POLARSSL_X509_RSASSA_PSS_SUPPORT)
     polarssl_free( csr->sig_opts );
 #endif