diff --git a/library/x509.c b/library/x509.c
index a6f5537..093a315 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -1297,7 +1297,7 @@
     mbedtls_x509_crt_free( &clicert );
 #else
     ((void) verbose);
-#endif /* MBEDTLS_CERTS_C && MBEDTLS_SHA1_C */
+#endif /* MBEDTLS_CERTS_C && MBEDTLS_SHA256_C */
     return( ret );
 }