diff git a/bignumnextprime.c b/bignumnextprime.c
index 46a8d929a23fc9ee0536addcac39debbed35243d..74df8c5985bd76d7a2564bdd7b09d2cb1faaa268 100644
 a/bignumnextprime.c
+++ b/bignumnextprime.c
@@ 104,7 +104,12 @@ nettle_next_prime(mpz_t p, mpz_t n, unsigned count, unsigned prime_limit,
/* Compute residues modulo small odd primes */
/* FIXME: Could be sped up by collecting limbsized products of the
primes, to reduce the calls to mpz_fdiv_ui */

+
+ /* FIXME: Could also handle the first few primes separately; compute
+ the residue mod 15015 = 3 * 7 * 11 * 13, and tabulate the steps
+ between the 5760 odd numbers in this interval that have no factor
+ in common with 15015.
+ */
TMP_ALLOC(moduli, prime_limit);
{
unsigned i;