diff --git a/src/MessageBus/CommandBusDynamicMethodThrowTypeExtension.php b/src/MessageBus/CommandBusDynamicMethodThrowTypeExtension.php
index 2af4d56..b1e3f90 100644
--- a/src/MessageBus/CommandBusDynamicMethodThrowTypeExtension.php
+++ b/src/MessageBus/CommandBusDynamicMethodThrowTypeExtension.php
@@ -31,7 +31,7 @@ public function __construct(CommandTypeExtractor $commandTypeExtractor, CommandH
 
     public function isMethodSupported(MethodReflection $methodReflection): bool
     {
-        if (! is_a($methodReflection->getDeclaringClass()->getName(), CommandBus::class, true)) {
+        if (! $methodReflection->getDeclaringClass()->is(CommandBus::class)) {
             return false;
         }