diff --git a/apps/encryption/tests/Crypto/CryptTest.php b/apps/encryption/tests/Crypto/CryptTest.php
index 738dfe0a2a0..eea4186377c 100644
--- a/apps/encryption/tests/Crypto/CryptTest.php
+++ b/apps/encryption/tests/Crypto/CryptTest.php
@@ -37,8 +37,7 @@ class CryptTest extends TestCase {
 			->disableOriginalConstructor()
 			->getMock();
 		$this->logger->expects($this->any())
-			->method('warning')
-			->willReturn(true);
+			->method('warning');
 		$this->userSession = $this->getMockBuilder(IUserSession::class)
 			->disableOriginalConstructor()
 			->getMock();