diff --git a/lib/dispatcher/h2c-client.js b/lib/dispatcher/h2c-client.js
index a551f5d5b33..3885d85985b 100644
--- a/lib/dispatcher/h2c-client.js
+++ b/lib/dispatcher/h2c-client.js
@@ -12,8 +12,6 @@ class H2CClient extends DispatcherBase {
   #client = null
 
   constructor (origin, clientOpts) {
-    super()
-
     if (typeof origin === 'string') {
       origin = new URL(origin)
     }
@@ -47,6 +45,8 @@ class H2CClient extends DispatcherBase {
       )
     }
 
+    super()
+
     this.#client = new Client(origin, {
       ...opts,
       connect: this.#buildConnector(connect),
diff --git a/lib/dispatcher/pool.js b/lib/dispatcher/pool.js
index 00cf50c3012..77fd5326696 100644
--- a/lib/dispatcher/pool.js
+++ b/lib/dispatcher/pool.js
@@ -51,8 +51,6 @@ class Pool extends PoolBase {
       throw new InvalidArgumentError('connect must be a function or an object')
     }
 
-    super()
-
     if (typeof connect !== 'function') {
       connect = buildConnector({
         ...tls,
@@ -65,6 +63,8 @@ class Pool extends PoolBase {
       })
     }
 
+    super()
+
     this[kConnections] = connections || null
     this[kUrl] = util.parseOrigin(origin)
     this[kOptions] = { ...util.deepClone(options), connect, allowH2, clientTtl }
diff --git a/lib/dispatcher/proxy-agent.js b/lib/dispatcher/proxy-agent.js
index 39f8266d24b..c67dc810985 100644
--- a/lib/dispatcher/proxy-agent.js
+++ b/lib/dispatcher/proxy-agent.js
@@ -37,11 +37,12 @@ class Http1ProxyWrapper extends DispatcherBase {
   #client
 
   constructor (proxyUrl, { headers = {}, connect, factory }) {
-    super()
     if (!proxyUrl) {
       throw new InvalidArgumentError('Proxy URL is mandatory')
     }
 
+    super()
+
     this[kProxyHeaders] = headers
     if (factory) {
       this.#client = factory(proxyUrl, { connect })