diff --git a/src/Entity/Db/ProcessStep.php b/src/Entity/Db/ProcessStep.php
index d7aed7aa98e6a7b2875d8c8dbeb880c9bd0389c8..5b498b24d171bbd7fad685869d2b53893c261456 100644
--- a/src/Entity/Db/ProcessStep.php
+++ b/src/Entity/Db/ProcessStep.php
@@ -93,7 +93,7 @@ class ProcessStep
         return $this;
     }
 
-    public function setLabel(?string $label): ?string {
+    public function setLabel(?string $label): self {
         $this->label = $label;
 
         return $this;