diff --git a/tests/lib/Files/FilesystemTest.php b/tests/lib/Files/FilesystemTest.php
index dc3754678aca..9a70cf7ab0a2 100644
--- a/tests/lib/Files/FilesystemTest.php
+++ b/tests/lib/Files/FilesystemTest.php
@@ -399,7 +399,7 @@ public function testUserNameCasing() {
 
 		\OC_User::clearBackends();
 		// needed for loginName2UserName mapping
-		$userBackend = $this->getMock('\OC\User\Database');
+		$userBackend = $this->createMock(\OC\User\Database::class);
 		\OC::$server->getUserManager()->registerBackend($userBackend);
 
 		$userBackend->expects($this->once())
diff --git a/tests/lib/Files/Node/RootTest.php b/tests/lib/Files/Node/RootTest.php
index 61dd41f67e9f..69f1aaaead46 100644
--- a/tests/lib/Files/Node/RootTest.php
+++ b/tests/lib/Files/Node/RootTest.php
@@ -116,7 +116,7 @@ public function testGetUserFolder() {
 
 		\OC_User::clearBackends();
 		// needed for loginName2UserName mapping
-		$userBackend = $this->getMock('\OC\User\Database');
+		$userBackend = $this->createMock(\OC\User\Database::class);
 		\OC::$server->getUserManager()->registerBackend($userBackend);
 
 		$userBackend->expects($this->any())