diff -ru src/Symfony/Component/Messenger/HandleTrait.php src/Symfony/Component/Messenger/HandleTrait.php
--- src/Symfony/Component/Messenger/HandleTrait.php	2025-03-10 18:45:27.291624221 +0000
+++ src/Symfony/Component/Messenger/HandleTrait.php	2025-03-10 18:45:28.589627019 +0000
@@ -50,7 +50,7 @@
         if (\count($handledStamps) > 1) {
             $handlers = implode(', ', array_map(fn (HandledStamp $stamp): string => \sprintf('"%s"', $stamp->getHandlerName()), $handledStamps));
 
-            throw new LogicException(\sprintf('Message of type "%s" was handled multiple times. Only one handler is expected when using "%s::%s()", got %d: %s.', get_debug_type($envelope->getMessage()), static::class, __FUNCTION__, \count($handledStamps), $handlers));
+            throw new LogicException(\sprintf('Message of type "%s" was handled multiple times. Only one handler is expected when using "%s::%s()", got %d: "%s".', get_debug_type($envelope->getMessage()), static::class, __FUNCTION__, \count($handledStamps), $handlers));
         }
 
         return $handledStamps[0]->getResult();