diff --git a/NevaevaLibrary/AccountContracts/BindingModels/AccountBindingModel.cs b/NevaevaLibrary/AccountContracts/BindingModels/AccountBindingModel.cs
index f9f2b08..2541da3 100644
--- a/NevaevaLibrary/AccountContracts/BindingModels/AccountBindingModel.cs
+++ b/NevaevaLibrary/AccountContracts/BindingModels/AccountBindingModel.cs
@@ -12,7 +12,7 @@ namespace AccountContracts.BindingModels
         public int Id { get; set; }
         public string Login { get; set; } = string.Empty;
         public string? Warnings { get; set; } = string.Empty;
-        public float? Rating { get; set; }
+        public float? Rating { get; set; } = null;
         public int RoleId { get; set; }
     }
 }
diff --git a/NevaevaLibrary/AccountDatabaseImplement/Models/Account.cs b/NevaevaLibrary/AccountDatabaseImplement/Models/Account.cs
index bc65bfe..4e16235 100644
--- a/NevaevaLibrary/AccountDatabaseImplement/Models/Account.cs
+++ b/NevaevaLibrary/AccountDatabaseImplement/Models/Account.cs
@@ -16,8 +16,9 @@ namespace AccountDatabaseImplement.Models
         public int Id { get; private set; }
         [Required]
         public string Login { get; set; }
-        public string? Warnings { get; set; }
-        public float? Rating { get; set; }
+
+        public string? Warnings { get; set; } = null;
+        public float? Rating { get; set; } = null;
         [Required]
         public int RoleId { get; set; }
         public virtual Role Role { get; set; } = new();
diff --git a/NevaevaLibrary/AccountsView/FormAccount.cs b/NevaevaLibrary/AccountsView/FormAccount.cs
index 15139c1..f4fd046 100644
--- a/NevaevaLibrary/AccountsView/FormAccount.cs
+++ b/NevaevaLibrary/AccountsView/FormAccount.cs
@@ -82,7 +82,7 @@ namespace AccountsView
                     Id = _id ?? 0,
                     Login = textBoxLogin.Text,
                     Warnings = textBoxWarnings.Text,
-                    Rating = (float)controlInputRating.Value,
+                    Rating = controlInputRating.Value.HasValue ? (float)controlInputRating.Value.GetValueOrDefault() : null,
                     RoleId = _roles.First(x => x.RoleName == comboBoxControlRole.SelectedValue).Id,
                 };
                 var operationResult = _id.HasValue ? _logic.Update(model) : _logic.Create(model);
diff --git a/NevaevaLibrary/AccountsView/FormMain.cs b/NevaevaLibrary/AccountsView/FormMain.cs
index dcf76eb..f365ee8 100644
--- a/NevaevaLibrary/AccountsView/FormMain.cs
+++ b/NevaevaLibrary/AccountsView/FormMain.cs
@@ -20,7 +20,7 @@ namespace AccountsView
         {
             InitializeComponent();
             _logic = logic;
-            abazovTreeView.setHierarchy(new List<(string, bool)> { ("RoleName", false), ("Rating", true), ("Id", true), ("Login", true) });
+            abazovTreeView.setHierarchy(new List<(string, bool)> { ("RoleName", false), ("Rating", false), ("Id", true), ("Login", true) });
         }
 
         private void ролиToolStripMenuItem_Click(object sender, EventArgs e)
@@ -43,6 +43,13 @@ namespace AccountsView
             var accounts = _logic.ReadList(null);
             if (accounts != null)
             {
+                foreach (var account in accounts)
+                {
+                    if (!account.Rating.HasValue)
+                    {
+                        account.Rating = 0;
+                    }
+                }
                 abazovTreeView.addItems(accounts);
             }
         }