diff --git a/lam/tests/lib/LAMConfigTest.php b/lam/tests/lib/LAMConfigTest.php
index 2d887992..972c5403 100644
--- a/lam/tests/lib/LAMConfigTest.php
+++ b/lam/tests/lib/LAMConfigTest.php
@@ -57,7 +57,7 @@ class LAMConfigTest extends TestCase {
 	/**
 	 * Cleans up the environment after running a test.
 	 */
-	protected function tearDown() {
+	protected function tearDown(): void {
 		$this->lAMConfig = null;
 		deleteConfigProfile(LAMConfigTest::FILE_NAME);
 		$profiles = getConfigProfiles();
diff --git a/lam/tests/lib/baseModuleTest.php b/lam/tests/lib/baseModuleTest.php
index d07390ea..9874b1fe 100644
--- a/lam/tests/lib/baseModuleTest.php
+++ b/lam/tests/lib/baseModuleTest.php
@@ -29,7 +29,7 @@ include_once __DIR__ . '/../../lib/baseModule.inc';
  */
 class BaseModuleTest extends TestCase {
 
-	function setup() {
+	protected function setup(): void {
 		$_SESSION['language'] = 'en_GB.utf8:UTF-8:English (Great Britain)';
 	}
 
diff --git a/lam/tests/lib/modules/ppolicyUserTest.php b/lam/tests/lib/modules/ppolicyUserTest.php
index 52b92865..f5610e24 100644
--- a/lam/tests/lib/modules/ppolicyUserTest.php
+++ b/lam/tests/lib/modules/ppolicyUserTest.php
@@ -47,7 +47,7 @@ if (is_readable('lam/lib/modules/ppolicyUser.inc')) {
 		private $options = array();
 		private $resultLog = null;
 
-		public function setUp() {
+		protected function setUp(): void {
 			$this->job = $this->getMockBuilder('PPolicyPasswordNotifyJob')
 				->setMethods(array('getDBLastPwdChangeTime', 'setDBLastPwdChangeTime', 'sendMail',
 						'findUsers', 'getConfigPrefix', 'getPolicyOptions'))
diff --git a/lam/tests/lib/modules/shadowAccountTest.php b/lam/tests/lib/modules/shadowAccountTest.php
index 2fb8b13c..b576f6bb 100644
--- a/lam/tests/lib/modules/shadowAccountTest.php
+++ b/lam/tests/lib/modules/shadowAccountTest.php
@@ -133,7 +133,7 @@ if (is_readable('lam/lib/passwordExpirationJob.inc')) {
 		private $options = array();
 		private $resultLog = null;
 
-		public function setUp() {
+		public function setUp(): void {
 			$this->job = $this->getMockBuilder('ShadowAccountPasswordNotifyJob')
 				->setMethods(array('getDBLastPwdChangeTime', 'setDBLastPwdChangeTime', 'sendMail', 'findUsers', 'getConfigPrefix'))
 				->getMock();
diff --git a/lam/tests/lib/securityTest.php b/lam/tests/lib/securityTest.php
index 2a5cf4a1..8dfbaa57 100644
--- a/lam/tests/lib/securityTest.php
+++ b/lam/tests/lib/securityTest.php
@@ -36,7 +36,7 @@ class SecurityTest extends TestCase {
 
 	private $cfg = null;
 
-	protected function setUp() {
+	protected function setUp(): void {
 		testCreateDefaultConfig ();
 		$this->cfg = &$_SESSION ['cfgMain'];
 		$this->resetPasswordRules();
@@ -45,7 +45,7 @@ class SecurityTest extends TestCase {
 	/**
 	 * Cleans up the environment after running a test.
 	 */
-	protected function tearDown() {
+	protected function tearDown(): void {
 		testDeleteDefaultConfig();
 		parent::tearDown();
 	}
diff --git a/lam/tests/lib/typesTest.php b/lam/tests/lib/typesTest.php
index b23f9103..6291008f 100644
--- a/lam/tests/lib/typesTest.php
+++ b/lam/tests/lib/typesTest.php
@@ -33,7 +33,7 @@ class ListAttributeTest extends TestCase {
 
 	private $type;
 
-	public function setUp() {
+	protected function setUp(): void {
 		$this->type = $this->getMockBuilder('ConfiguredType')->setMethods(array('getBaseType'))->getMock();
 		$scope = new user($this->type);
 		$this->type->method('getBaseType')->willReturn($scope);