diff --git a/src/shrpx_ssl.cc b/src/shrpx_ssl.cc
index d290ba23..74f5eae4 100644
--- a/src/shrpx_ssl.cc
+++ b/src/shrpx_ssl.cc
@@ -57,6 +57,12 @@ namespace shrpx {
 
 namespace ssl {
 
+// Recommended general purpose "Non-Backward Compatible" cipher by
+// mozilla.
+//
+// https://wiki.mozilla.org/Security/Server_Side_TLS
+#define DEFAULT_CIPHER_LIST "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK"
+
 namespace {
 int next_proto_cb(SSL *s, const unsigned char **data, unsigned int *len,
                   void *arg)
@@ -243,9 +249,7 @@ SSL_CTX* create_ssl_context(const char *private_key_file,
   if(get_config()->ciphers) {
     ciphers = get_config()->ciphers.get();
   } else {
-    // Recommended general purpose cipher by mozilla.
-    // https://wiki.mozilla.org/Security/Server_Side_TLS
-    ciphers = "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:ECDHE-RSA-RC4-SHA:ECDHE-ECDSA-RC4-SHA:AES128:AES256:RC4-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK";
+    ciphers = DEFAULT_CIPHER_LIST;
   }
 
   SSL_CTX_set_options(ssl_ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
@@ -392,7 +396,7 @@ SSL_CTX* create_ssl_client_context()
   if(get_config()->ciphers) {
     ciphers = get_config()->ciphers.get();
   } else {
-    ciphers = "HIGH:!aNULL:!eNULL";
+    ciphers = "HIGH:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK";
   }
   if(SSL_CTX_set_cipher_list(ssl_ctx, ciphers) == 0) {
     LOG(FATAL) << "SSL_CTX_set_cipher_list " << ciphers << " failed: "