diff --git a/helpers.php b/helpers.php
index 1e4e372..02053b1 100644
--- a/helpers.php
+++ b/helpers.php
@@ -361,7 +361,7 @@ function carbonFormat(
             '900',  // +9:00
             '0900',
             'asiajayapura' => 'WIT',
-            default => ($showTz ? $timezone : ''),
+            default => $timezone,
         };
 
         if (is_null($datetime)) {
@@ -377,7 +377,7 @@ function carbonFormat(
         }
 
         $datetime->timezone($timezone);
-        $timezoneLabel = $timezoneSuffix
+        $timezoneLabel = $showTz && $timezoneSuffix
             ? " {$timezoneSuffix}"
             : '';
 
diff --git a/tests/TestCase.php b/tests/TestCase.php
index d24236c..3bea636 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -68,9 +68,9 @@ protected function getEnvironmentSetUp($app)
     {
         $app['config']->set('database.default', 'sqlite');
         $app['config']->set('database.connections.sqlite', [
-            'driver'   => 'sqlite',
+            'driver' => 'sqlite',
             'database' => ':memory:',
-            'prefix'   => '',
+            'prefix' => '',
         ]);
 
         $app['config']->set('view.paths', [__DIR__.'/resources/views']);