diff --git a/tests/lib/Files/FilesystemTest.php b/tests/lib/Files/FilesystemTest.php
index fb9dee1505..04eafc99f3 100644
--- a/tests/lib/Files/FilesystemTest.php
+++ b/tests/lib/Files/FilesystemTest.php
@@ -376,7 +376,7 @@ class FilesystemTest extends \Test\TestCase {
 
 		\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 35ba8a6c22..534dd33032 100644
--- a/tests/lib/Files/Node/RootTest.php
+++ b/tests/lib/Files/Node/RootTest.php
@@ -141,7 +141,7 @@ class RootTest extends \Test\TestCase {
 
 		\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())