diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index c9276a36af0..0dcfdf78595 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -858,7 +858,7 @@ include 'filename'
         cryptanalysis when large amounts of traffic can be examined, but it
         also carries a large performance penalty. The sum of sent and received
         traffic is used to check the limit. If this parameter is set to 0,
-        renegotiation is disabled. The default is <literal>512MB</>.
+        renegotiation is disabled. The default is <literal>0</>.
        </para>
        <note>
         <para>
@@ -870,6 +870,14 @@ include 'filename'
          disabled.
         </para>
        </note>
+
+       <warning>
+        <para>
+         Due to bugs in <productname>OpenSSL</> enabling ssl renegotiation, by
+         configuring a non-zero <varname>ssl_renegotiation_limit</>, is likely
+         to lead to problems like long-lived connections breaking.
+        </para>
+       </warning>
       </listitem>
      </varlistentry>
 
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 2b6527f012a..61cde68a6c3 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -2377,7 +2377,7 @@ static struct config_int ConfigureNamesInt[] =
 			GUC_UNIT_KB,
 		},
 		&ssl_renegotiation_limit,
-		512 * 1024, 0, MAX_KILOBYTES,
+		0, 0, MAX_KILOBYTES,
 		NULL, NULL, NULL
 	},
 
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 12f1cbaa1f8..0bf2554a1d4 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -81,7 +81,7 @@
 #ssl = off				# (change requires restart)
 #ssl_ciphers = 'DEFAULT:!LOW:!EXP:!MD5:@STRENGTH'	# allowed SSL ciphers
 					# (change requires restart)
-#ssl_renegotiation_limit = 512MB	# amount of data between renegotiations
+#ssl_renegotiation_limit = 0		# amount of data between renegotiations
 #ssl_cert_file = 'server.crt'		# (change requires restart)
 #ssl_key_file = 'server.key'		# (change requires restart)
 #ssl_ca_file = ''			# (change requires restart)