diff --git a/README.md b/README.md
index a84e073..5db6a5b 100644
--- a/README.md
+++ b/README.md
@@ -9,16 +9,15 @@ It automatically collects Node.js process metrics along with routes hit count, t
 
 <!-- toc -->
 
-- [fastify-metrics](#fastify-metrics)
-  - [Installation](#installation)
-  - [Usage](#usage)
-    - [Notes](#notes)
-  - [Metrics collected](#metrics-collected)
-  - [Decorators](#decorators)
-  - [Hooks](#hooks)
-  - [API](#api)
-    - [Configuration `options`](#configuration-options)
-  - [Contributing](#contributing)
+-   [Installation](#installation)
+-   [Usage](#usage)
+    -   [Notes](#notes)
+-   [Metrics collected](#metrics-collected)
+-   [Decorators](#decorators)
+-   [Hooks](#hooks)
+-   [API](#api)
+    -   [Configuration `options`](#configuration-options)
+-   [Contributing](#contributing)
 
 <!-- tocstop -->
 
@@ -118,7 +117,7 @@ This module exports a [plugin registration function](https://github.com/fastify/
 -   `bufferSize`: Number. Metrics buffer size. See [dats](https://github.com/immobiliare/dats#new-clientoptions).
 -   `bufferFlushTimeout`: Number. Metrics buffer flush timeout. See [dats](https://github.com/immobiliare/dats#new-clientoptions).
 -   `sampleInterval`: Number. Optional. Sample interval in `ms` used to gather process stats. Defaults to `1000`.
--   `afterSend`: Function: `(err) => void`. Optional. This function is called after each metric send. Default: `(err) => err && log(err)`
+-   `onError`: Function: `(err) => void`. Optional. This function to handle possible Dats errors. Default: `(err) => log(err)`
 -   `udpDnsCache`: Boolean. Optional. Activate udpDnsCache. Default `true`.
 -   `udpDnsCacheTTL`: Number. Optional. DNS cache Time to live of an entry in seconds. Default `120`.
 -   `collect`: Object. Optional. Which metrics the plugin should track.
diff --git a/index.js b/index.js
index b9e4f44..cb9d7d1 100644
--- a/index.js
+++ b/index.js
@@ -9,7 +9,9 @@ const doc = require('@dnlup/doc');
 const { hrtime2ns, hrtime2ms, hrtime2s } = require('@dnlup/hrtime-utils');
 
 function clientMock() {
-    const mock = {};
+    const mock = {
+        socket: { onError: () => {} },
+    };
     for (const method of ['on', 'counter', 'timing', 'gauge', 'set']) {
         mock[method] = () => {};
     }
@@ -88,7 +90,7 @@ module.exports = fp(
             udpDnsCache,
             udpDnsCacheTTL,
             collect = {},
-            afterSend = (error) => void (error && fastify.log.error(error)),
+            onError = (error) => void fastify.log.error(error),
         },
         next
     ) {
@@ -108,7 +110,7 @@ module.exports = fp(
                   bufferFlushTimeout,
                   udpDnsCache,
                   udpDnsCacheTTL,
-                  afterSend: afterSend,
+                  onError: onError,
               })
             : clientMock();
 
diff --git a/tests/plugin.test.js b/tests/plugin.test.js
index 9a6732e..f1756ad 100644
--- a/tests/plugin.test.js
+++ b/tests/plugin.test.js
@@ -171,7 +171,7 @@ test.serial('should log statsd client errors', async (t) => {
         namespace: 'ns',
     });
     const spy = sinon.spy(server.log, 'error');
-    server.stats.afterSend(new Error('test'));
+    server.stats.socket.onError(new Error('test'));
     t.is('test', spy.getCall(0).firstArg.message);
 });