diff --git a/src/Entity/Db/Process.php b/src/Entity/Db/Process.php
index af0597bc80e2bb9fe70d5084c55f4d87ea3929e3..e5764825c86990f0476b47ca1b264761e0c9596b 100644
--- a/src/Entity/Db/Process.php
+++ b/src/Entity/Db/Process.php
@@ -195,7 +195,7 @@ class Process
         return $this->label;
     }
 
-    public function setLabel(?string $label): ?string
+    public function setLabel(?string $label): self
     {
         $this->label = $label;