diff --git a/AndDietCokeContracts/AndDietCokeContracts/DataModels/BuyerDataModel.cs b/AndDietCokeContracts/AndDietCokeContracts/DataModels/BuyerDataModel.cs
index 0fe72a7..152d6d0 100644
--- a/AndDietCokeContracts/AndDietCokeContracts/DataModels/BuyerDataModel.cs
+++ b/AndDietCokeContracts/AndDietCokeContracts/DataModels/BuyerDataModel.cs
@@ -31,6 +31,6 @@ public class BuyerDataModel(string id, string fio, string phoneNumber) : IValida
         if (!Regex.IsMatch(PhoneNumber, @"^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\- ]{7,10}$"))
             throw new ValidationException("Field PhoneNumber is not a phone number");
         if (!Regex.IsMatch(FIO, @"^[А-ЯЁA-Z][а-яёa-z]+(?:-[А-ЯЁA-Z][а-яёa-z]+)?\s[А-ЯЁA-Z][а-яёa-z]+(?:\s[А-ЯЁA-Z][а-яёa-z]+)?$"))
-            throw new ValidationException("Not Correct FIO");
+            throw new ValidationException("Incorrect FIO input");
     }
 }
diff --git a/AndDietCokeContracts/AndDietCokeTests/DataModelsTests/BuyerDataModelTests.cs b/AndDietCokeContracts/AndDietCokeTests/DataModelsTests/BuyerDataModelTests.cs
index aa93bb5..93f2e09 100644
--- a/AndDietCokeContracts/AndDietCokeTests/DataModelsTests/BuyerDataModelTests.cs
+++ b/AndDietCokeContracts/AndDietCokeTests/DataModelsTests/BuyerDataModelTests.cs
@@ -15,15 +15,15 @@ internal class BuyerDataModelTests
     [Test]
     public void IdIsNullOrEmptyTest()
     {
-        var buyer = CreateDataModel(null, "fio", "number");
+        var buyer = CreateDataModel(null, "Ivanov Ivan", "number");
         Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
-        buyer = CreateDataModel(string.Empty, "fio", "number");
+        buyer = CreateDataModel(string.Empty, "Ivanov Ivan", "number");
         Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
     }
     [Test]
     public void IdIsNotGuidTest()
     {
-        var buyer = CreateDataModel("id", "fio", "number");
+        var buyer = CreateDataModel("id", "Ivanov Ivan", "number");
         Assert.That(() => buyer.Validate(), Throws.TypeOf<ValidationException>());
     }
     [Test]
@@ -37,23 +37,23 @@ internal class BuyerDataModelTests
     [Test]
     public void PhoneNumberIsNullOrEmptyTest()
     {
-        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", null);
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "Ivanov Ivan", null);
         Assert.That(() => buyer.Validate(),
         Throws.TypeOf<ValidationException>());
-        buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", string.Empty);
+        buyer = CreateDataModel(Guid.NewGuid().ToString(), "Ivanov Ivan", string.Empty);
         Assert.That(() => buyer.Validate(),Throws.TypeOf<ValidationException>());
     }
     [Test]
     public void PhoneNumberIsIncorrectTest()
     {
-        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "fio", "777");
+        var buyer = CreateDataModel(Guid.NewGuid().ToString(), "Ivanov Ivan", "777");
         Assert.That(() => buyer.Validate(),Throws.TypeOf<ValidationException>());
     }
     [Test]
     public void AllFieldsIsCorrectTest()
     {
         var buyerId = Guid.NewGuid().ToString();
-        var fio = "Fio";
+        var fio = "Ivanov Ivan";
         var phoneNumber = "+7-777-777-77-77";
         var buyer = CreateDataModel(buyerId, fio, phoneNumber);
         Assert.That(() => buyer.Validate(), Throws.Nothing);