diff --git a/umn/source/change_history.rst b/umn/source/change_history.rst
index 62bee9c..2777dde 100644
--- a/umn/source/change_history.rst
+++ b/umn/source/change_history.rst
@@ -16,7 +16,7 @@ Change History
 | 2022-02-15                        | Added the following content:                                                                                                                                                                                                                                                                                                                     |
 |                                   |                                                                                                                                                                                                                                                                                                                                                  |
 |                                   | -  Added constraints on EIPs dedicated for dedicated load balancers in :ref:`Assigning an EIP and Binding It to an ECS <en-us_topic_0013748738>` (:ref:`Assigning an EIP and Binding It to an ECS <vpc_eip02_0001>`).                                                                                                                            |
-|                                   | -  Added description about the default reverse domain name of an EIP in\ :ref:`Step 3: Assign an EIP and Bind It to an ECS <vpc_qs_0011>` and :ref:`Assigning an EIP and Binding It to an ECS <en-us_topic_0013748738>`.                                                                                                                         |
+|                                   | -  Added description about the default reverse domain name of an EIP in \ :ref:`Step 3: Assign an EIP and Bind It to an ECS <vpc_qs_0011>` and :ref:`Assigning an EIP and Binding It to an ECS <en-us_topic_0013748738>`.                                                                                                                        |
 |                                   | -  Added constraints on EIPs dedicated for dedicated load balancers in :ref:`Assigning an EIP and Binding It to an ECS <en-us_topic_0013748738>` (:ref:`Assigning an EIP and Binding It to an ECS <vpc_eip02_0001>`) and :ref:`Adding EIPs to a Shared Bandwidth <vpc010006>` (:ref:`Adding EIPs to a Shared Bandwidth <vpc_bandwidth02_0003>`). |
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 | 2021-12-15                        | Modified the following content:                                                                                                                                                                                                                                                                                                                  |