diff --git a/Blazor/Models/Administrator.cs b/Blazor/Models/Administrator.cs
index 6de9703..9673ccd 100644
--- a/Blazor/Models/Administrator.cs
+++ b/Blazor/Models/Administrator.cs
@@ -15,10 +15,10 @@ namespace Blazor.Models
 
         Administrator(int id, string username, string password)
         {
-            this.Id = id;
-            this.Username = username;
+            Id = id;
+            Username = username;
             // got this hashed password
-            this.HashedPassword = Convert.ToBase64String(KeyDerivation.Pbkdf2(
+            HashedPassword = Convert.ToBase64String(KeyDerivation.Pbkdf2(
                 password: password!,
                 salt: salt,
                 prf: KeyDerivationPrf.HMACSHA256,
diff --git a/Blazor/Models/Lobby.cs b/Blazor/Models/Lobby.cs
index 7fe7b0e..668714d 100644
--- a/Blazor/Models/Lobby.cs
+++ b/Blazor/Models/Lobby.cs
@@ -5,17 +5,17 @@ namespace Blazor.Models
         public int Id { get; private set; }
         public string Name { get; private set; }
         public string? Password { get; private set; }
-        public int nbPlayers { get; private set; }
+        public int NbPlayers { get; private set; }
 
         public Lobby(int id, string name, string? password = null, int nbPlayers = 0)
         {
             Id = id;
             Name = name;
             Password = password;
-            this.nbPlayers = nbPlayers;
+            NbPlayers = nbPlayers;
         }
 
-        public void addPlayers(int nb) { nbPlayers += nb; }
-        public void removePlayers(int nb) { nbPlayers -= nb; }
+        public void addPlayers(int nb) { NbPlayers += nb; }
+        public void removePlayers(int nb) { NbPlayers -= nb; }
     }
 }
diff --git a/Blazor/Models/Question.cs b/Blazor/Models/Question.cs
index c279686..ead9caa 100644
--- a/Blazor/Models/Question.cs
+++ b/Blazor/Models/Question.cs
@@ -9,7 +9,7 @@
         public int Difficulty { get; set; }
         public int NbFails { get; private set; }
 
-        public Question(int id, string content, int idChapter, int difficulty, int nbFails, int? idAnswerGood = null)
+        public Question(int id, string content, int idChapter, int difficulty, int nbFails = 0, int? idAnswerGood = null)
         {
             Id = id;
             Content = content;