diff --git a/changes/v5.0.14/fix-9703.en.md b/changes/v5.0.14/fix-9703.en.md
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+Set the default value of the `qos` field of the HTTP API `/clients/:clientid/subscribe` to 0.
+Before this fix, the `qos` field have no default value, which leads to a `function_clause` error
+when querying this API.
diff --git a/changes/v5.0.14/fix-9703.zh.md b/changes/v5.0.14/fix-9703.zh.md
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+将 HTTP 接口 `/clients/:clientid/subscribe` 的 `qos` 字段的默认值设置为 0。
+在此修复之前，`qos` 字段没有默认值，调用订阅接口的时候将导致 `function_clause` 错误。