diff --git a/tests/lib/Files/Cache/Wrapper/CacheJailTest.php b/tests/lib/Files/Cache/Wrapper/CacheJailTest.php
index 4eccd0baa88a..f3d11f8e2547 100644
--- a/tests/lib/Files/Cache/Wrapper/CacheJailTest.php
+++ b/tests/lib/Files/Cache/Wrapper/CacheJailTest.php
@@ -30,6 +30,12 @@ public function setUp(): void {
 		$this->cache = new \OC\Files\Cache\Wrapper\CacheJail($this->sourceCache, 'foo');
 	}
 
+	protected function tearDown(): void {
+		if ($this->sourceCache) {
+			$this->sourceCache->clear();
+		}
+	}
+
 	public function testSearchOutsideJail() {
 		$file1 = 'foo/foobar';
 		$file2 = 'folder/foobar';