diff --git a/tests/src/Core/Lock/SemaphoreLockTest.php b/tests/src/Core/Lock/SemaphoreLockTest.php
index dd696d4aef..a2291b2c24 100644
--- a/tests/src/Core/Lock/SemaphoreLockTest.php
+++ b/tests/src/Core/Lock/SemaphoreLockTest.php
@@ -22,7 +22,7 @@ class SemaphoreLockTest extends LockTest
 		$configMock
 			->shouldReceive('get')
 			->with('system', 'temppath', NULL, false)
-			->andReturn('/tmp');
+			->andReturn('/tmp/');
 		$dice->shouldReceive('create')->with(Configuration::class)->andReturn($configMock);
 
 		// @todo Because "get_temppath()" is using static methods, we have to initialize the BaseObject
@@ -43,11 +43,13 @@ class SemaphoreLockTest extends LockTest
 	}
 
 	/**
-	 * Test if semaphore locking works even for
+	 * Test if semaphore locking works even when trying to release locks, where the file exists
+	 * but it shouldn't harm locking
 	 */
 	public function testMissingFileNotOverriding()
 	{
 		$file = get_temppath() . '/test.sem';
+		touch($file);
 
 		$this->assertTrue(file_exists($file));
 		$this->assertFalse($this->instance->releaseLock('test', false));
@@ -64,9 +66,24 @@ class SemaphoreLockTest extends LockTest
 	public function testMissingFileOverriding()
 	{
 		$file = get_temppath() . '/test.sem';
+		touch($file);
 
 		$this->assertTrue(file_exists($file));
 		$this->assertFalse($this->instance->releaseLock('test', true));
 		$this->assertTrue(file_exists($file));
 	}
+
+	/**
+	 * Test acquire lock even the semaphore file exists, but isn't used
+	 */
+	public function testOverrideSemFile()
+	{
+		$file = get_temppath() . '/test.sem';
+		touch($file);
+
+		$this->assertTrue(file_exists($file));
+		$this->assertTrue($this->instance->acquireLock('test'));
+		$this->assertTrue($this->instance->isLocked('test'));
+		$this->assertTrue($this->instance->releaseLock('test'));
+	}
 }