diff --git a/crypto/bn/bn_exp.c b/crypto/bn/bn_exp.c
index e25259359..e0db6c7cf 100644
--- a/crypto/bn/bn_exp.c
+++ b/crypto/bn/bn_exp.c
@@ -650,7 +650,7 @@ static int MOD_EXP_CTIME_COPY_FROM_PREBUF(BIGNUM *b, int top,
  * precomputation memory layout to limit data-dependency to a minimum to
  * protect secret exponents (cf. the hyper-threading timing attacks pointed
  * out by Colin Percival,
- * http://www.daemong-consideredperthreading-considered-harmful/)
+ * http://www.daemonology.net/hyperthreading-considered-harmful/)
  */
 int BN_mod_exp_mont_consttime(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p,
                               const BIGNUM *m, BN_CTX *ctx,
diff --git a/crypto/camellia/camellia.c b/crypto/camellia/camellia.c
index cfbe9c6de..5d0a3ceda 100644
--- a/crypto/camellia/camellia.c
+++ b/crypto/camellia/camellia.c
@@ -67,7 +67,7 @@
 
 /*
  * Algorithm Specification
- * http://info.isl.llia/specicrypt/eng/camellia/specifications.html
+ * http://info.isl.ntt.co.jp/crypt/eng/camellia/specifications.html
  */
 
 /*
diff --git a/test/ectest.c b/test/ectest.c
index c8893f9f2..c6f1d7e1f 100644
--- a/test/ectest.c
+++ b/test/ectest.c
@@ -1412,7 +1412,7 @@ struct nistp_test_params {
     int degree;
     /*
      * Qx, Qy and D are taken from
-     * http://csrcdocut.gov/groups/ST/toolkit/documents/Examples/ECDSA_Prime.pdf
+     * http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/ECDSA_Prime.pdf
      * Otherwise, values are standard curve parameters from FIPS 180-3
      */
     const char *p, *a, *b, *Qx, *Qy, *Gx, *Gy, *order, *d;