diff --git a/src/server/languageProvider.ts b/src/server/languageProvider.ts
index 4d35ce9..7d6bbcd 100644
--- a/src/server/languageProvider.ts
+++ b/src/server/languageProvider.ts
@@ -205,7 +205,7 @@ export default class LanguageProvider {
       languages.registerDocumentRangeFormatProvider(languageIds, formatProvider)
     )
     this.disposables.push(
-      languages.registerOnTypeFormattingEditProvider(languageIds, formatProvider, [';', '}', '\n', '\033'])
+      languages.registerOnTypeFormattingEditProvider(languageIds, formatProvider, [';', '}', '\n', String.fromCharCode(27)])
     )
 
     // this.disposables.push(