diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index c669f75..b8b5197 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -1040,7 +1040,7 @@ include_dir 'conf.d'
         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>
@@ -1052,6 +1052,16 @@ include_dir 'conf.d'
          disabled.
         </para>
        </note>
+
+       <warning>
+        <para>
+         Enabling <varname>ssl_renegotiation_limit</> can cause various
+         problems endangering the stability of a <productname>PostgreSQL</>
+         instance like connection breaking suddendly and exposes the
+         server to bugs related to the internal implementation of renegotiation
+         done in the SSL libraries used.
+        </para>
+       </warning>
       </listitem>
      </varlistentry>
 
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 6ad0892..396c68b 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -2457,7 +2457,7 @@ 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 8dfd485..3845d57 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -83,7 +83,7 @@
 					# (change requires restart)
 #ssl_prefer_server_ciphers = on		# (change requires restart)
 #ssl_ecdh_curve = 'prime256v1'		# (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)