diff --git a/src/Resources/config/services.php b/src/Resources/config/services.php
index f28e853a..7c6a907e 100644
--- a/src/Resources/config/services.php
+++ b/src/Resources/config/services.php
@@ -263,7 +263,7 @@
             ])
             ->alias(PetrinetDomainLogicInterface::class, PetrinetDomainLogic::class)
 
-        ->set(StepHelperInterface::class)
+        ->set(StepHelper::class)
             ->alias(StepHelperInterface::class, StepHelper::class)
 
         ->set(StepRunner::class)