diff --git a/src/Entity/Db/Process.php b/src/Entity/Db/Process.php
index e5764825c86990f0476b47ca1b264761e0c9596b..74501c42fa93eeff06a405d8c8576a097fe89169 100644
--- a/src/Entity/Db/Process.php
+++ b/src/Entity/Db/Process.php
@@ -60,7 +60,7 @@ class Process
      * @var ?string
      * @ORM\Column (type="text", nullable=true)
      */
-    private ?string $label;
+    private ?string $label = null;
 
     /**
      * @var SignatureFlow
diff --git a/src/Entity/Db/ProcessStep.php b/src/Entity/Db/ProcessStep.php
index 5b498b24d171bbd7fad685869d2b53893c261456..3223211bc654033ec9fe1df94bec42b0b3135ccf 100644
--- a/src/Entity/Db/ProcessStep.php
+++ b/src/Entity/Db/ProcessStep.php
@@ -39,7 +39,7 @@ class ProcessStep
      * @var ?string
      * @ORM\Column (type="text", nullable=true)
      */
-    private ?string $label;
+    private ?string $label = null;
 
 
     /**