diff --git a/core/modules/system/src/Tests/Cache/DatabaseBackendUnitTest.php b/core/modules/system/src/Tests/Cache/DatabaseBackendUnitTest.php
index e3aff07..cf6767f 100644
--- a/core/modules/system/src/Tests/Cache/DatabaseBackendUnitTest.php
+++ b/core/modules/system/src/Tests/Cache/DatabaseBackendUnitTest.php
@@ -55,17 +55,17 @@ public function testSetGet() {
     $this->assertTrue($item->expire !== CacheBackendInterface::CACHE_PERMANENT);
-    $this->assertTrue($item->expire <= REQUEST_TIME + 2 * 1.5);
+    $this->assertTrue($item->expire <= REQUEST_TIME + 2 * DatabaseBackend::JITTER_MULTIPLIER);
   }
 
 }