diff --git a/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs b/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs
index 6bb1b25..b7634a9 100644
--- a/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs
+++ b/RhSolutions.AddIn/AddIn/RhSolutionsAddIn.cs
@@ -25,7 +25,7 @@ public sealed class RhSolutionsAddIn : IExcelAddIn
             .AddSingleton<IAddInConfiguration, AddInConfiguration>()
             .AddSingleton<IDatabaseClient, DatabaseClient>()
             .AddSingleton<ICurrencyClient, CurrencyClient>()
-            .AddSingleton<ISleevesCaluculator, SleevesCalculator>()
+            .AddSingleton<ISleevesCalculator, SleevesCalculator>()
             .AddTransient<IFileDialog, FileDialog>();
 
         Services.AddSingleton<WriterFactory>();
diff --git a/RhSolutions.AddIn/Services/ISleevesCaluculator.cs b/RhSolutions.AddIn/Services/ISleevesCalculator.cs
similarity index 78%
rename from RhSolutions.AddIn/Services/ISleevesCaluculator.cs
rename to RhSolutions.AddIn/Services/ISleevesCalculator.cs
index 371427f..eba37df 100644
--- a/RhSolutions.AddIn/Services/ISleevesCaluculator.cs
+++ b/RhSolutions.AddIn/Services/ISleevesCalculator.cs
@@ -1,6 +1,6 @@
 namespace RhSolutions.Services;
 
-public interface ISleevesCaluculator
+public interface ISleevesCalculator
 {
     public Dictionary<Product, double> CalculateSleeves(Dictionary<Product, double> products);
 }
diff --git a/RhSolutions.AddIn/Services/SleevesCalculator.cs b/RhSolutions.AddIn/Services/SleevesCalculator.cs
index 072ae0f..6e65496 100644
--- a/RhSolutions.AddIn/Services/SleevesCalculator.cs
+++ b/RhSolutions.AddIn/Services/SleevesCalculator.cs
@@ -2,7 +2,7 @@
 
 namespace RhSolutions.Services;
 
-public class SleevesCalculator : ISleevesCaluculator
+public class SleevesCalculator : ISleevesCalculator
 {
     private const string doublePattern =
         @"((?i)равнопроходная|угольник 90|угольник 45|Т-образная|Комплект трубок(?i))(.+?(?<Sleeve>\b16\b|\b20\b|\b25\b|\b32\b|\b40\b|\b50\b|\b63\b))+";
diff --git a/RhSolutions.AddIn/Tools/SleevesTool.cs b/RhSolutions.AddIn/Tools/SleevesTool.cs
index 3981371..4952ff2 100644
--- a/RhSolutions.AddIn/Tools/SleevesTool.cs
+++ b/RhSolutions.AddIn/Tools/SleevesTool.cs
@@ -2,9 +2,9 @@
 
 internal class SleevesTool : Tool
 {
-    private readonly ISleevesCaluculator _sleevesCaluculator;
+    private readonly ISleevesCalculator _sleevesCaluculator;
 
-    public SleevesTool(ReaderFactory readerFactory, WriterFactory writerFactory, ISleevesCaluculator sleevesCaluculator) : base(readerFactory, writerFactory)
+    public SleevesTool(ReaderFactory readerFactory, WriterFactory writerFactory, ISleevesCalculator sleevesCaluculator) : base(readerFactory, writerFactory)
     {
         _sleevesCaluculator = sleevesCaluculator;
     }
diff --git a/RhSolutions.AddIn/Tools/ToolFactory.cs b/RhSolutions.AddIn/Tools/ToolFactory.cs
index a330197..1c71042 100644
--- a/RhSolutions.AddIn/Tools/ToolFactory.cs
+++ b/RhSolutions.AddIn/Tools/ToolFactory.cs
@@ -4,7 +4,7 @@ internal class ToolFactory
 {
     static ReaderFactory readerFactory = RhSolutionsAddIn.ServiceProvider.GetService<ReaderFactory>();
     static WriterFactory writerFactory = RhSolutionsAddIn.ServiceProvider.GetService<WriterFactory>();
-    static ISleevesCaluculator sleevesCaluculator = RhSolutionsAddIn.ServiceProvider.GetService<ISleevesCaluculator>();
+    static ISleevesCalculator sleevesCaluculator = RhSolutionsAddIn.ServiceProvider.GetService<ISleevesCalculator>();
 
     public Tool GetTool(string toolName)
     {