diff --git a/doc/lua-api/index.rst b/doc/lua-api/index.rst
index 9797ece..61557c7 100644
--- a/doc/lua-api/index.rst
+++ b/doc/lua-api/index.rst
@@ -118,6 +118,13 @@
    The "core" class is static, it is not possible to create a new object of this
    type.
 
+.. js:attribute:: core.silent
+
+  :returns: integer
+
+  This attribute is an integer, it contains the value -1. It is a special value
+  used to disable logging.
+
 .. js:attribute:: core.emerg
 
   :returns: integer
@@ -1845,12 +1852,12 @@
 .. js:function:: TXN.set_loglevel(txn, loglevel)
 
   Is used to change the log level of the current request. The "loglevel" must
-  be an integer between 0 and 7.
+  be an integer between 0 and 7 or the special value -1 to disable logging.
 
   :param class_txn txn: The class txn object containing the data.
   :param integer loglevel: The required log level. This variable can be one of
-  :see: :js:attr:`core.emerg`, :js:attr:`core.alert`, :js:attr:`core.crit`,
-    :js:attr:`core.err`, :js:attr:`core.warning`, :js:attr:`core.notice`,
+  :see: :js:attr:`core.silent`, :js:attr:`core.emerg`, :js:attr:`core.alert`,
+    :js:attr:`core.crit`, :js:attr:`core.err`, :js:attr:`core.warning`, :js:attr:`core.notice`,
     :js:attr:`core.info`, :js:attr:`core.debug` (log level definitions)
 
 .. js:function:: TXN.set_tos(txn, tos)
diff --git a/src/hlua.c b/src/hlua.c
index 9337448..40e337e 100644
--- a/src/hlua.c
+++ b/src/hlua.c
@@ -5697,10 +5697,12 @@
 	htxn = MAY_LJMP(hlua_checktxn(L, 1));
 	ll = MAY_LJMP(luaL_checkinteger(L, 2));
 
-	if (ll < 0 || ll > 7)
-		WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be between 0 and 7"));
+	if (ll < -1 || ll > NB_LOG_LEVELS)
+		WILL_LJMP(luaL_argerror(L, 2, "Bad log level. It must be one of the following value:"
+					" core.silent(-1), core.emerg(0), core.alert(1), core.crit(2), core.error(3),"
+					" core.warning(4), core.notice(5), core.info(6) or core.debug(7)"));
 
-	htxn->s->logs.level = ll + 1;
+	htxn->s->logs.level = (ll == -1) ? ll : ll + 1;
 	return 0;
 }
 
@@ -8956,6 +8958,7 @@
 	hlua_class_const_int(L, "thread", thread_num);
 
 	/* Push the loglevel constants. */
+		hlua_class_const_int(L, "silent", -1);
 	for (i = 0; i < NB_LOG_LEVELS; i++)
 		hlua_class_const_int(L, log_levels[i], i);