diff --git a/client/src/extension.ts b/client/src/extension.ts
index 4348345..d1a2432 100644
--- a/client/src/extension.ts
+++ b/client/src/extension.ts
@@ -35,43 +35,17 @@
 
 import * as path from 'path';
 import * as fs from 'fs';
-import { languages, workspace, ExtensionContext, TextDocument } from 'vscode';
+import { workspace, ExtensionContext } from 'vscode';
 import {
   LanguageClient,
   LanguageClientOptions,
   ServerOptions,
   TransportKind,
 } from 'vscode-languageclient/node';
-import { getFileExtension, getLanguage } from './getLanguage';
-import { fstat } from 'fs';
 
 let client: LanguageClient;
 
 export function activate(context: ExtensionContext) {
-  // Register event listener to set language for '.mo' files.
-  const checkedFiles: { [id: string]: boolean } = {};
-  workspace.onDidOpenTextDocument((document: TextDocument) => {
-    if (checkedFiles[document.fileName]) {
-      return;
-    }
-
-    checkedFiles[document.fileName] = true;
-    if (getFileExtension(document) == '.mo') {
-      const lang = getLanguage(document);
-
-      switch (lang) {
-        case 'modelica':
-          languages.setTextDocumentLanguage(document, 'modelica');
-          break;
-        case 'metamodelica':
-          languages.setTextDocumentLanguage(document, 'metamodelica');
-          break;
-        default:
-          break;
-      }
-    }
-  });
-
   // The server is implemented in node, point to packed module
   const serverModule = context.asAbsolutePath(path.join('out', 'server.js'));
   if (!fs.existsSync(serverModule)) {
diff --git a/client/src/getLanguage.ts b/client/src/getLanguage.ts
deleted file mode 100644
index 8414ce6..0000000
--- a/client/src/getLanguage.ts
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * This file is part of OpenModelica.
- *
- * Copyright (c) 1998-2024, Open Source Modelica Consortium (OSMC),
- * c/o Linköpings universitet, Department of Computer and Information Science,
- * SE-58183 Linköping, Sweden.
- *
- * All rights reserved.
- *
- * THIS PROGRAM IS PROVIDED UNDER THE TERMS OF AGPL VERSION 3 LICENSE OR
- * THIS OSMC PUBLIC LICENSE (OSMC-PL) VERSION 1.8.
- * ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS PROGRAM CONSTITUTES
- * RECIPIENT'S ACCEPTANCE OF THE OSMC PUBLIC LICENSE OR THE GNU AGPL
- * VERSION 3, ACCORDING TO RECIPIENTS CHOICE.
- *
- * The OpenModelica software and the OSMC (Open Source Modelica Consortium)
- * Public License (OSMC-PL) are obtained from OSMC, either from the above
- * address, from the URLs:
- * http://www.openmodelica.org or
- * https://github.com/OpenModelica/ or
- * http://www.ida.liu.se/projects/OpenModelica,
- * and in the OpenModelica distribution.
- *
- * GNU AGPL version 3 is obtained from:
- * https://www.gnu.org/licenses/licenses.html#GPL
- *
- * This program is distributed WITHOUT ANY WARRANTY; without
- * even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE, EXCEPT AS EXPRESSLY SET FORTH
- * IN THE BY RECIPIENT SELECTED SUBSIDIARY LICENSE CONDITIONS OF OSMC-PL.
- *
- * See the full OSMC Public License conditions for more details.
- *
- */
-
-import * as path from 'path';
-import { TextDocument } from 'vscode';
-
-type LanguageTypes = 'modelica' | 'metamodelica' | 'unknown';
-
-export function getFileExtension(document: TextDocument): string | undefined {
-  const uri = document.uri;
-  const filePath = uri.fsPath;
-  return path.extname(filePath);
-}
-
-function hasMetaModelicaKeywords(content: string): boolean {
-  const unionRegex = new RegExp('\\b(uniontype)\\s+(\\w+)\\s*(".*")*');
-
-  return unionRegex.test(content);
-}
-
-/**
- * Check if the text document is a Modelica files, MetaModelica file or other.
- * @param document Text document.
- */
-export function getLanguage(document: TextDocument): LanguageTypes {
-  // Check
-  if (hasMetaModelicaKeywords(document.getText())) {
-    return 'metamodelica';
-  }
-
-  return 'modelica';
-}