diff --git a/tests/BootstrapperTest.php b/tests/BootstrapperTest.php
index fe62a9ae..4f11e617 100644
--- a/tests/BootstrapperTest.php
+++ b/tests/BootstrapperTest.php
@@ -93,6 +93,7 @@ test('database data is separated', function () {
 });
 
 test('cache data is separated', function (string $bootstrapper) {
+    // Make sure that the prefixed 'redis' cache driver is used
     expect(config('cache.default'))->toBe('redis');
 
     config([
diff --git a/tests/PrefixCacheBootstrapperTest.php b/tests/PrefixCacheBootstrapperTest.php
index 9d078db1..939213c9 100644
--- a/tests/PrefixCacheBootstrapperTest.php
+++ b/tests/PrefixCacheBootstrapperTest.php
@@ -231,7 +231,8 @@ test('specific central cache store can be used inside a service', function () {
 
 test('only the stores specified in tenantCacheStores get prefixed', function() {
     // Make sure the currently used store ('redis') is the only store in $tenantCacheStores
-    PrefixCacheTenancyBootstrapper::$tenantCacheStores = [$prefixedStore = 'redis'];
+    expect(PrefixCacheTenancyBootstrapper::$tenantCacheStores)->toBe([$prefixedStore = 'redis']);
+
     $centralValue = 'central-value';
     $assertStoreIsNotPrefixed = function (string $unprefixedStore) use ($prefixedStore, $centralValue) {
         // Switch to the unprefixed store