diff --git a/src/Nyanbyte.PPCheck.Lib/Models/OffenderInformation.cs b/src/Nyanbyte.PPCheck.Lib/Models/OffenderInformation.cs
index ff93c18..beac98a 100644
--- a/src/Nyanbyte.PPCheck.Lib/Models/OffenderInformation.cs
+++ b/src/Nyanbyte.PPCheck.Lib/Models/OffenderInformation.cs
@@ -20,7 +20,7 @@ public record OffenderPersona
     public string LastName { get; set; } = string.Empty;
     public string CityOfBirth { get; set; } = string.Empty;
     public DateTime DateOfBirth { get; set; }
-    public char Sex { get; set; }
+    public string Sex { get; set; } = string.Empty;
     public string FamilyName { get; set; } = string.Empty;
     public string? FathersName { get; set; }
     public string? MothersName { get; set; }
@@ -29,5 +29,5 @@ public record OffenderPersona
     public string DwellingPlace { get; set; } = string.Empty;
 
     [JsonIgnore]
-    public Sex OffenderSex => (Sex)Sex;
+    public Sex OffenderSex => string.IsNullOrWhiteSpace(Sex) ? Models.Sex.Unknown : (Sex)Sex[0];
 }
diff --git a/src/Nyanbyte.PPCheck.Lib/Models/Sex.cs b/src/Nyanbyte.PPCheck.Lib/Models/Sex.cs
index 38ba744..138d184 100644
--- a/src/Nyanbyte.PPCheck.Lib/Models/Sex.cs
+++ b/src/Nyanbyte.PPCheck.Lib/Models/Sex.cs
@@ -3,5 +3,6 @@ namespace Nyanbyte.PPCheck.Lib.Models;
 public enum Sex : byte
 {
     Male = (byte)'M',
-    Female = (byte)'F'
+    Female = (byte)'F',
+    Unknown = 0,
 }