diff --git a/DD.Persistence.Database/Helpers/FilterBuilder.cs b/DD.Persistence.Database/Helpers/FilterBuilder.cs
index 3954989..ea4a4a6 100644
--- a/DD.Persistence.Database/Helpers/FilterBuilder.cs
+++ b/DD.Persistence.Database/Helpers/FilterBuilder.cs
@@ -96,7 +96,7 @@ public static class FilterBuilder
     private static Dictionary<OperationEnum, Func<int, string?, ISpecification<TEntity>>> StringSpecifications<TEntity>()
     where TEntity : IValuesItem => new()
     {
-            { OperationEnum.Equal, (int index, string? value) => new ValueEqaulSpec<TEntity>(index, value) },
+            { OperationEnum.Equal, (int index, string? value) => new ValueEqualSpec<TEntity>(index, value) },
             { OperationEnum.NotEqual, (int index, string? value) => new ValueNotEqualSpec<TEntity>(index, value) },
             { OperationEnum.Greate, (int index, string? value) => new ValueGreateSpec<TEntity>(index, value) },
             { OperationEnum.GreateOrEqual, (int index, string? value) => new ValueGreateOrEqualSpec<TEntity>(index, value) },
@@ -106,7 +106,7 @@ public static class FilterBuilder
     private static Dictionary<OperationEnum, Func<int, double?, ISpecification<TEntity>>> DoubleSpecifications<TEntity>()
         where TEntity : IValuesItem => new()
         {
-            { OperationEnum.Equal, (int index, double? value) => new ValueEqaulSpec<TEntity>(index, value) },
+            { OperationEnum.Equal, (int index, double? value) => new ValueEqualSpec<TEntity>(index, value) },
             { OperationEnum.NotEqual, (int index, double? value) => new ValueNotEqualSpec<TEntity>(index, value) },
             { OperationEnum.Greate, (int index, double? value) => new ValueGreateSpec<TEntity>(index, value) },
             { OperationEnum.GreateOrEqual, (int index, double? value) => new ValueGreateOrEqualSpec<TEntity>(index, value) },
diff --git a/DD.Persistence.Database/Repositories/TimestampedValuesRepository.cs b/DD.Persistence.Database/Repositories/TimestampedValuesRepository.cs
index 23fd5e4..4153bd0 100644
--- a/DD.Persistence.Database/Repositories/TimestampedValuesRepository.cs
+++ b/DD.Persistence.Database/Repositories/TimestampedValuesRepository.cs
@@ -61,15 +61,15 @@ public class TimestampedValuesRepository : ITimestampedValuesRepository
             resultQuery = resultQuery.Any() ? resultQuery.Union(query) : query;
         }
         var groupedQuery = resultQuery!
-            .GroupBy(e => e!.DiscriminatorId)
+            .GroupBy(e => e.DiscriminatorId)
             .Select(g => KeyValuePair.Create(
                 g.Key,
-                g.OrderBy(i => i!.Timestamp).Skip(skip).Take(take))
+                g.OrderBy(i => i.Timestamp).Skip(skip).Take(take))
             );
             
         var entities = await groupedQuery.ToArrayAsync(token);
         var result = entities.ToDictionary(k => k.Key, v => v.Value.Select(e => (
-            e!.Timestamp,
+            e.Timestamp,
             e.Values
         )));
 
diff --git a/DD.Persistence.Database/Specifications/ValuesItem/ValueEqaulSpec.cs b/DD.Persistence.Database/Specifications/ValuesItem/ValueEqualSpec.cs
similarity index 77%
rename from DD.Persistence.Database/Specifications/ValuesItem/ValueEqaulSpec.cs
rename to DD.Persistence.Database/Specifications/ValuesItem/ValueEqualSpec.cs
index ec87fc1..2eed8c6 100644
--- a/DD.Persistence.Database/Specifications/ValuesItem/ValueEqaulSpec.cs
+++ b/DD.Persistence.Database/Specifications/ValuesItem/ValueEqualSpec.cs
@@ -7,15 +7,15 @@ namespace DD.Persistence.Database.Specifications.ValuesItem;
 /// Спецификация эквивалентности значений IValuesItem в соответствии с индексацией
 /// </summary>
 /// <typeparam name="TEntity"></typeparam>
-public class ValueEqaulSpec<TEntity> : Specification<TEntity>
+public class ValueEqualSpec<TEntity> : Specification<TEntity>
     where TEntity : IValuesItem
 {
-    public ValueEqaulSpec(int index, string? value)
+    public ValueEqualSpec(int index, string? value)
     {
         Query.Where(e => Convert.ToString(e.Values[index]) == value);
     }
 
-    public ValueEqaulSpec(int index, double? value)
+    public ValueEqualSpec(int index, double? value)
     {
         Query.Where(e => Convert.ToDouble(e.Values[index]) == value);
     }
diff --git a/DD.Persistence.IntegrationTests/Controllers/TimestampedValuesControllerTest.cs b/DD.Persistence.IntegrationTests/Controllers/TimestampedValuesControllerTest.cs
index ab1ee20..4eaf415 100644
--- a/DD.Persistence.IntegrationTests/Controllers/TimestampedValuesControllerTest.cs
+++ b/DD.Persistence.IntegrationTests/Controllers/TimestampedValuesControllerTest.cs
@@ -56,7 +56,7 @@ public class TimestampedValuesControllerTest : BaseIntegrationTest
         }
         catch (Exception ex)
         {
-            var expectedMessage = $"�� ������� ��������� ������, � ���������� ������� �� �� ����� ������� ���������� ������";
+            var expectedMessage = $"На сервере произошла ошибка, в результате которой он не может успешно обработать запрос";
 
             //assert
             Assert.Equal(expectedMessage, ex.Message);
@@ -78,7 +78,7 @@ public class TimestampedValuesControllerTest : BaseIntegrationTest
         var timestampBegin = DateTimeOffset.UtcNow.AddDays(-1);
         var columnNames = new List<string>() { "A", "C" };
         var skip = 0;
-        var take = 6; // ����� ������� �������� ����� ������������� ������� (\"A\">3) (��� ������ ��������������)
+        var take = 6; // Ровно столько значений будет удовлетворять фильтру (\"A\">3) (для одного дискриминатора)
 
         var customFilter = "(\"A\">3)";