diff --git a/BO4E/COM/Rufnummer.cs b/BO4E/COM/Rufnummer.cs
index 96c47e8a..a9588595 100644
--- a/BO4E/COM/Rufnummer.cs
+++ b/BO4E/COM/Rufnummer.cs
@@ -12,18 +12,15 @@ public class Rufnummer : COM
         /// <summary>
         ///     Ausprägung der Nummer, z.B. Zentrale, Faxnummer, Mobilnummer etc. Details <see cref="Rufnummernart" />
         /// </summary>
-        [JsonProperty(PropertyName = "nummerntyp", Required = Required.Always)]
+        [JsonProperty(PropertyName = "nummerntyp", Required = Required.Default)]
         [JsonPropertyName("nummerntyp")]
         [ProtoMember(3)]
-        public Rufnummernart Nummerntyp { get; set; }
+        public Rufnummernart? Nummerntyp { get; set; }
 
         /// <summary>Die konkrete Nummer, z.B. 02433 5 26 01 900</summary>
-        [JsonProperty(PropertyName = "rufnummer", Required = Required.Always)]
+        [JsonProperty(PropertyName = "rufnummer", Required = Required.Default)]
         [JsonPropertyName("rufnummer")]
         [ProtoMember(4)]
-#pragma warning disable IDE1006 // Naming Styles
-        // ReSharper disable once InconsistentNaming
-        public string rufnummer { get; set; }
-#pragma warning restore IDE1006 // Naming Styles
+        public string? rufnummer { get; set; }
     }
-}
\ No newline at end of file
+}