diff --git a/actions/ConnectivityAction.php b/actions/ConnectivityAction.php
index 43abdd34..1018c4a2 100644
--- a/actions/ConnectivityAction.php
+++ b/actions/ConnectivityAction.php
@@ -21,7 +21,10 @@
  * - Returns a responsive web page that automatically checks all whitelisted
  * bridges (using JavaScript) if no bridge is specified.
  */
-class ConnectivityAction extends ActionAbstract {
+class ConnectivityAction implements ActionInterface
+{
+	public $userData = [];
+
 	public function execute() {
 
 		if(!Debug::isEnabled()) {
diff --git a/actions/DetectAction.php b/actions/DetectAction.php
index e58aee93..d662d7aa 100644
--- a/actions/DetectAction.php
+++ b/actions/DetectAction.php
@@ -11,7 +11,10 @@
  * @link	https://github.com/rss-bridge/rss-bridge
  */
 
-class DetectAction extends ActionAbstract {
+class DetectAction implements ActionInterface
+{
+	public $userData = [];
+
 	public function execute() {
 		$targetURL = $this->userData['url']
 			or returnClientError('You must specify a url!');
diff --git a/actions/DisplayAction.php b/actions/DisplayAction.php
index df850b9d..cb0963a0 100644
--- a/actions/DisplayAction.php
+++ b/actions/DisplayAction.php
@@ -11,7 +11,10 @@
  * @link	https://github.com/rss-bridge/rss-bridge
  */
 
-class DisplayAction extends ActionAbstract {
+class DisplayAction implements ActionInterface
+{
+	public $userData = [];
+
 	private function get_return_code($error) {
 		$returnCode = $error->getCode();
 		if ($returnCode === 301 || $returnCode === 302) {
diff --git a/actions/ListAction.php b/actions/ListAction.php
index f7b92063..a778d846 100644
--- a/actions/ListAction.php
+++ b/actions/ListAction.php
@@ -11,7 +11,8 @@
  * @link	https://github.com/rss-bridge/rss-bridge
  */
 
-class ListAction extends ActionAbstract {
+class ListAction implements ActionInterface
+{
 	public function execute() {
 		$list = new StdClass();
 		$list->bridges = array();
diff --git a/index.php b/index.php
index a4e5af89..3c6f0ce2 100644
--- a/index.php
+++ b/index.php
@@ -19,7 +19,7 @@ try {
 
 	if(array_key_exists('action', $params)) {
 		$action = $actionFac->create($params['action']);
-		$action->setUserData($params);
+		$action->userData = $params;
 		$action->execute();
 	} else {
 		$showInactive = filter_input(INPUT_GET, 'show_inactive', FILTER_VALIDATE_BOOLEAN);
diff --git a/lib/ActionAbstract.php b/lib/ActionAbstract.php
deleted file mode 100644
index b925d609..00000000
--- a/lib/ActionAbstract.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-/**
- * This file is part of RSS-Bridge, a PHP project capable of generating RSS and
- * Atom feeds for websites that don't have one.
- *
- * For the full license information, please view the UNLICENSE file distributed
- * with this source code.
- *
- * @package	Core
- * @license	http://unlicense.org/ UNLICENSE
- * @link	https://github.com/rss-bridge/rss-bridge
- */
-
-/**
- * An abstract class for action objects
- */
-abstract class ActionAbstract implements ActionInterface {
-	/**
-	 * Holds the user data.
-	 *
-	 * @var array
-	 */
-	protected $userData = null;
-
-	/**
-	 * {@inheritdoc}
-	 *
-	 * @param array $userData {@inheritdoc}
-	 */
-	public function setUserData($userData) {
-		$this->userData = $userData;
-	}
-}
diff --git a/lib/ActionInterface.php b/lib/ActionInterface.php
index c38d057a..63088573 100644
--- a/lib/ActionInterface.php
+++ b/lib/ActionInterface.php
@@ -15,14 +15,6 @@
  * Interface for action objects.
  */
 interface ActionInterface {
-	/**
-	 * Set user data for the action to consume.
-	 *
-	 * @param array $userData An associative array of user data.
-	 * @return void
-	 */
-	function setUserData($userData);
-
 	/**
 	 * Execute the action.
 	 *
diff --git a/tests/Actions/ActionImplementationTest.php b/tests/Actions/ActionImplementationTest.php
index b10d44e5..0caf6d80 100644
--- a/tests/Actions/ActionImplementationTest.php
+++ b/tests/Actions/ActionImplementationTest.php
@@ -2,7 +2,6 @@
 
 namespace RssBridge\Tests\Actions;
 
-use ActionAbstract;
 use ActionInterface;
 use PHPUnit\Framework\TestCase;
 
@@ -32,15 +31,15 @@ class ActionImplementationTest extends TestCase {
 	 * @dataProvider dataActionsProvider
 	 */
 	public function testVisibleMethods($path) {
-		$allowedActionAbstract = get_class_methods(ActionAbstract::class);
-		sort($allowedActionAbstract);
+		$allowedMethods = get_class_methods(ActionInterface::class);
+		sort($allowedMethods);
 
 		$this->setAction($path);
 
 		$methods = get_class_methods($this->obj);
 		sort($methods);
 
-		$this->assertEquals($allowedActionAbstract, $methods);
+		$this->assertEquals($allowedMethods, $methods);
 	}
 
 	public function dataActionsProvider() {
diff --git a/tests/Actions/ListActionTest.php b/tests/Actions/ListActionTest.php
index bbd6ec78..1ecf50ed 100644
--- a/tests/Actions/ListActionTest.php
+++ b/tests/Actions/ListActionTest.php
@@ -80,7 +80,6 @@ class ListActionTest extends TestCase {
 		$actionFac = new ActionFactory();
 
 		$action = $actionFac->create('list');
-		$action->setUserData(array()); /* no user data required */
 
 		ob_start();
 		$action->execute();