diff --git a/TelegramBotBase/Builder/BotBaseBuilder.cs b/TelegramBotBase/Builder/BotBaseBuilder.cs
index 64596b9..1baeba2 100644
--- a/TelegramBotBase/Builder/BotBaseBuilder.cs
+++ b/TelegramBotBase/Builder/BotBaseBuilder.cs
@@ -399,41 +399,41 @@ public class BotBaseBuilder : IAPIKeySelectionStage, IMessageLoopSelectionStage,
     #region "Step 7 (Language)"
 
     /// <inheritdoc cref="ILanguageSelectionStage.DefaultLanguage"/>
-    public IBuildingStage DefaultLanguage()
+    public IThreadingStage DefaultLanguage()
     {
         return this;
     }
 
     /// <inheritdoc cref="ILanguageSelectionStage.UseEnglish"/>
-    public IBuildingStage UseEnglish()
+    public IThreadingStage UseEnglish()
     {
         Default.Language = new English();
         return this;
     }
 
     /// <inheritdoc cref="ILanguageSelectionStage.UseGerman"/>
-    public IBuildingStage UseGerman()
+    public IThreadingStage UseGerman()
     {
         Default.Language = new German();
         return this;
     }
 
     /// <inheritdoc cref="ILanguageSelectionStage.UsePersian"/>
-    public IBuildingStage UsePersian()
+    public IThreadingStage UsePersian()
     {
         Default.Language = new Persian();
         return this;
     }
 
     /// <inheritdoc cref="ILanguageSelectionStage.UseRussian"/>
-    public IBuildingStage UseRussian()
+    public IThreadingStage UseRussian()
     {
         Default.Language = new Russian();
         return this;
     }
 
     /// <inheritdoc cref="ILanguageSelectionStage.Custom"/>
-    public IBuildingStage Custom(Localization language)
+    public IThreadingStage Custom(Localization language)
     {
         Default.Language = language;
         return this;
diff --git a/TelegramBotBase/Builder/Interfaces/ILanguageSelectionStage.cs b/TelegramBotBase/Builder/Interfaces/ILanguageSelectionStage.cs
index b06addd..769e698 100644
--- a/TelegramBotBase/Builder/Interfaces/ILanguageSelectionStage.cs
+++ b/TelegramBotBase/Builder/Interfaces/ILanguageSelectionStage.cs
@@ -11,35 +11,35 @@ public interface ILanguageSelectionStage
     ///     Selects the default language for control usage. (English)
     /// </summary>
     /// <returns>The next stage in the building process.</returns>
-    IBuildingStage DefaultLanguage();
+    IThreadingStage DefaultLanguage();
 
     /// <summary>
     ///     Selects english as the default language for control labels.
     /// </summary>
     /// <returns>The next stage in the building process.</returns>
-    IBuildingStage UseEnglish();
+    IThreadingStage UseEnglish();
 
     /// <summary>
     ///     Selects german as the default language for control labels.
     /// </summary>
     /// <returns>The next stage in the building process.</returns>
-    IBuildingStage UseGerman();
+    IThreadingStage UseGerman();
 
     /// <summary>
     ///     Selects persian as the default language for control labels.
     /// </summary>
     /// <returns>The next stage in the building process.</returns>
-    IBuildingStage UsePersian();
+    IThreadingStage UsePersian();
 
     /// <summary>
     ///     Selects russian as the default language for control labels.
     /// </summary>
     /// <returns>The next stage in the building process.</returns>
-    IBuildingStage UseRussian();
+    IThreadingStage UseRussian();
 
     /// <summary>
     ///     Selects a custom language as the default language for control labels.
     /// </summary>
     /// <returns>The next stage in the building process.</returns>
-    IBuildingStage Custom(Localization language);
+    IThreadingStage Custom(Localization language);
 }
\ No newline at end of file