diff --git a/VisualPascalABCNET/Workbench/WindowOperations.cs b/VisualPascalABCNET/Workbench/WindowOperations.cs
index f2bc6d1bc..17d8ac9be 100644
--- a/VisualPascalABCNET/Workbench/WindowOperations.cs
+++ b/VisualPascalABCNET/Workbench/WindowOperations.cs
@@ -399,7 +399,9 @@ namespace VisualPascalABC
                 SetFocusToEditor();
             }
 
-            CodeCompletion.CodeCompletionController.SetLanguage(CurrentCodeFileDocument.FileName);
+            // В Linux версии это в начале работы
+            if (CurrentCodeFileDocument != null)
+                CodeCompletion.CodeCompletionController.SetLanguage(CurrentCodeFileDocument.FileName);
 
             bool intellisenseAvailable = CodeCompletion.CodeCompletionController.IntellisenseAvailable();
 
diff --git a/VisualPascalABCNETLinux/Workbench/WindowOperations.cs b/VisualPascalABCNETLinux/Workbench/WindowOperations.cs
index af0a89738..2fef14008 100644
--- a/VisualPascalABCNETLinux/Workbench/WindowOperations.cs
+++ b/VisualPascalABCNETLinux/Workbench/WindowOperations.cs
@@ -411,7 +411,9 @@ namespace VisualPascalABC
                 SetFocusToEditor();
             }
 
-            CodeCompletion.CodeCompletionController.SetLanguage(CurrentCodeFileDocument.FileName);
+            // В Linux версии это в начале работы
+            if (CurrentCodeFileDocument != null)
+                CodeCompletion.CodeCompletionController.SetLanguage(CurrentCodeFileDocument.FileName);
 
             bool intellisenseAvailable = CodeCompletion.CodeCompletionController.IntellisenseAvailable();