diff --git a/tests/webfiori/tests/error/SampleHandler1.php b/tests/webfiori/tests/error/SampleHandler1.php
index e5bec47..5949233 100644
--- a/tests/webfiori/tests/error/SampleHandler1.php
+++ b/tests/webfiori/tests/error/SampleHandler1.php
@@ -12,7 +12,7 @@ public function __construct() {
         $this->setName('H1');
     }
     public function handle() {
-        define('SampleHandler1', 'Yes');
+        !defined('SampleHandler1') ? define('SampleHandler1', 'Yes') : '';
     }
 
     public function isActive(): bool {
diff --git a/tests/webfiori/tests/error/SampleHandler2.php b/tests/webfiori/tests/error/SampleHandler2.php
index 8f9f8da..1016264 100644
--- a/tests/webfiori/tests/error/SampleHandler2.php
+++ b/tests/webfiori/tests/error/SampleHandler2.php
@@ -12,7 +12,7 @@ public function __construct() {
         $this->setName('H2');
     }
     public function handle() {
-        define('SampleHandler2', 'Yes');
+       !defined('SampleHandler2') ? define('SampleHandler2', 'Yes') : '';
     }
 
     public function isActive(): bool {
diff --git a/tests/webfiori/tests/error/SampleHandler3.php b/tests/webfiori/tests/error/SampleHandler3.php
index 5c89f8c..cd2ca65 100644
--- a/tests/webfiori/tests/error/SampleHandler3.php
+++ b/tests/webfiori/tests/error/SampleHandler3.php
@@ -12,7 +12,7 @@ public function __construct() {
         $this->setName('H3');
     }
     public function handle() {
-        define('SampleHandler3', 'Yes');
+        !defined('SampleHandler3') ? define('SampleHandler3', 'Yes') : '';
     }
 
     public function isActive(): bool {