diff --git a/reference/amqp/amqpqueue/nack.xml b/reference/amqp/amqpqueue/nack.xml
index cec9c55174..8bd99cb115 100644
--- a/reference/amqp/amqpqueue/nack.xml
+++ b/reference/amqp/amqpqueue/nack.xml
@@ -15,7 +15,7 @@
    <methodparam choice="opt"><type>string</type><parameter>flags</parameter><initializer><constant>AMQP_NOPARAM</constant></initializer></methodparam>
   </methodsynopsis>
   <para>
-    Mark the message identified by <parameter>delivery_tab</parameter> as explicitly not acknowledged. This method can only be called on messages that have not yet been acknowledged, meaning that messages retrieved with by <methodname>AMQPQueue::consume</methodname> and <methodname>AMQPQueue::get</methodname> and using the <constant>AMQP_AUTOACK</constant> flag are not eligible.
+    Mark the message identified by <parameter>delivery_tag</parameter> as explicitly not acknowledged. This method can only be called on messages that have not yet been acknowledged, meaning that messages retrieved with by <methodname>AMQPQueue::consume</methodname> and <methodname>AMQPQueue::get</methodname> and using the <constant>AMQP_AUTOACK</constant> flag are not eligible.
   </para>
   <para>
     When called, the broker will immediately put the message back onto the queue, instead of waiting until the connection is closed.