diff --git a/ChangeLog b/ChangeLog
index 5fdffd9bb..17a10b05e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2008-05-20  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
+
+	Fixed compile error with OpenSSL.
+	* src/IteratableChunkChecksumValidator.cc
+	* src/LibsslDHKeyExchange.h
+	* src/MessageDigestHelper.cc
+
 2008-05-19  Tatsuhiro Tsujikawa  <tujikawa at rednoah dot com>
 
 	Revert the default value of --max-concurrent-downloads to 5.
diff --git a/src/IteratableChunkChecksumValidator.cc b/src/IteratableChunkChecksumValidator.cc
index 518d3c2c9..f901f0eeb 100644
--- a/src/IteratableChunkChecksumValidator.cc
+++ b/src/IteratableChunkChecksumValidator.cc
@@ -47,6 +47,7 @@
 #include "messageDigest.h"
 #include "StringFormat.h"
 #include <cerrno>
+#include <cstring>
 
 namespace aria2 {
 
diff --git a/src/LibsslDHKeyExchange.h b/src/LibsslDHKeyExchange.h
index bab473d3c..d4011b35a 100644
--- a/src/LibsslDHKeyExchange.h
+++ b/src/LibsslDHKeyExchange.h
@@ -38,6 +38,7 @@
 #include "common.h"
 #include "DlAbortEx.h"
 #include "StringFormat.h"
+#include <cstring>
 #include <openssl/dh.h>
 #include <openssl/rand.h>
 #include <openssl/err.h>
diff --git a/src/MessageDigestHelper.cc b/src/MessageDigestHelper.cc
index 01726248f..3b54baf5d 100644
--- a/src/MessageDigestHelper.cc
+++ b/src/MessageDigestHelper.cc
@@ -40,6 +40,7 @@
 #include "Util.h"
 #include "StringFormat.h"
 #include <cerrno>
+#include <cstring>
 
 namespace aria2 {