diff --git a/crypto.c b/crypto.c
index e513e6f..ac45f8a 100644
--- a/crypto.c
+++ b/crypto.c
@@ -774,7 +774,7 @@ smc_encrypt_bid (struct BRANDT_Auction *ad, size_t *buflen)
 		ec_point_serialize (&((struct ec_mpi *)cur)[1], ad->beta[ad->i][j]);
 		gcry_mpi_addm (r_sum, r_sum, r_part, ec_n);
 
-		/* prepare sum for additional  M+1st price auction proof (see below) */
+		/* prepare sum for additional M+1st price auction proof (see below) */
 		if (0 < ad->m && 1 == (ad->k - j - ad->i) % ad->n)
 			gcry_mpi_addm (r_sum2, r_sum2, r_part, ec_n);