1 files changed, 1 insertions, 1 deletions
diff --git a/rand.c b/rand.c
index 3d280ef8..d5780d78 100644
--- a/rand.c
+++ b/rand.c
@@ -255,7 +255,7 @@ val random(val state, val modulus)
                                 cobj_handle(self, state, random_state_s));
   mp_int *m;
 
-  if (bignump(modulus) && !ISNEG(m = mp(modulus))) {
+  if (bignump(modulus) && !mp_isneg(m = mp(modulus))) {
     ucnum bits = mp_count_bits(m) - mp_is_pow_two(m);
     ucnum rands_needed = (bits + 32 - 1) / 32;
     ucnum msb_rand_bits = bits % 32;