diff --git a/ChangeLog b/ChangeLog
index 01e5decaaa..9b968bf0e0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Nov 21 13:05:16 2015  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* ext/openssl/ossl.h: LibreSSL doesn't have and need e_os2.h.
+
 Sat Nov 21 09:18:10 2015  Koichi Sasada  <ko1@atdot.net>
 
 	* thread_sync.c: reduce the specification of Queue#close.
diff --git a/ext/openssl/ossl.h b/ext/openssl/ossl.h
index eca0ef9448..3be01b0cb6 100644
--- a/ext/openssl/ossl.h
+++ b/ext/openssl/ossl.h
@@ -44,7 +44,7 @@ extern "C" {
 #  define assert(condition)
 #endif
 
-#if defined(_WIN32)
+#if defined(_WIN32) && !defined(LIBRESSL_VERSION_NUMBER)
 #  include <openssl/e_os2.h>
 #  define OSSL_NO_CONF_API 1
 #  if !defined(OPENSSL_SYS_WIN32)