diff --git a/src/Entity/StackOfVotes.php b/src/Entity/StackOfVotes.php
index 362d9db..c169942 100755
--- a/src/Entity/StackOfVotes.php
+++ b/src/Entity/StackOfVotes.php
@@ -48,7 +48,7 @@ class StackOfVotes {
 	private $owner;
 
 	/**
-	 * @ORM\Column(type="string", length=255)
+	 * @ORM\Column(type="string", length=255, nullable=true)
 	 */
 	private $ip;