diff --git a/EnvelopeGenerator.Application/Model/ReceiverQuery.cs b/EnvelopeGenerator.Application/Model/ReceiverQuery.cs
index 9d6fc902..4ce7b16c 100644
--- a/EnvelopeGenerator.Application/Model/ReceiverQuery.cs
+++ b/EnvelopeGenerator.Application/Model/ReceiverQuery.cs
@@ -9,15 +9,15 @@ public record ReceiverQuery
     /// <summary>
     /// ID des Empfängers
     /// </summary>
-    public int? Id { get; init; }
+    public virtual int? Id { get; init; }
 
     /// <summary>
     /// E-Mail Adresse des Empfängers
     /// </summary>
-    public string? EmailAddress { get; init; }
+    public virtual string? EmailAddress { get; init; }
 
     /// <summary>
     /// Eindeutige Signatur des Empfängers
     /// </summary>
-    public string? Signature { get; set; }
+    public virtual string? Signature { get; set; }
 }
\ No newline at end of file