diff --git a/app/WillySoft/Http/ErrorHandler.php b/app/WillySoft/Http/ErrorHandler.php
index 9025ca8..ef77a15 100644
--- a/app/WillySoft/Http/ErrorHandler.php
+++ b/app/WillySoft/Http/ErrorHandler.php
@@ -21,34 +21,28 @@ abstract class ErrorHandler
     public static function register(callable $callback)
     {
         ob_start();
-        set_error_handler(self::error(...));
-        set_exception_handler(self::exception(...));
-        register_shutdown_function(self::shutdown(...), $callback);
-    }
 
-    private static function error($errno, $errstr, $errfile, $errline)
-    {
-        $errstr = htmlspecialchars($errstr);
-        self::$error_messages[] = "<b>Error[$errno]:</b> $errstr in <b>$errfile</b> at line <b>$errline</b>";
-    }
+        set_error_handler(function($errno, $errstr, $errfile, $errline) {
+            $errstr = htmlspecialchars($errstr);
+            self::$error_messages[] = "<b>Error[$errno]:</b> $errstr in <b>$errfile</b> at line <b>$errline</b>";
+        });
 
-    private static function exception($exception)
-    {
-        self::$error_messages[] = "<b>Uncaught Exception:</b> " . $exception;
-    }
+        set_exception_handler(function($exception) {
+            self::$error_messages[] = "<b>Uncaught Exception:</b> " . $exception;
+        });
 
-    private static function shutdown(callable $callback)
-    {
-        if (!self::$error_messages) {
-           return; 
-        }
+        register_shutdown_function(function() use(&$callback) {
+            if (!self::$error_messages) {
+                return; 
+            }
 
-        // remove current output to be replaced by error page
-        ob_end_clean();
+            // remove current output to be replaced by error page
+            ob_end_clean();
 
-        http_response_code(500);
-        header_remove();
+            http_response_code(500);
+            header_remove();
 
-        $callback(self::$error_messages);
+            $callback(self::$error_messages);
+        });
     }
 }
\ No newline at end of file