diff --git a/src/languageFeatures.ts b/src/languageFeatures.ts
index dee4c30..6a50b43 100644
--- a/src/languageFeatures.ts
+++ b/src/languageFeatures.ts
@@ -432,7 +432,7 @@ export class DocumentFormattingEditProvider implements languages.DocumentFormatt
     const resource = model.uri;
 
     return this._worker(resource).then((worker) =>
-      worker.format(String(resource), null, fromFormattingOptions(options)).then((edits) => {
+      worker.format(String(resource), fromFormattingOptions(options)).then((edits) => {
         if (!edits || edits.length === 0) {
           return;
         }
diff --git a/src/yamlWorker.ts b/src/yamlWorker.ts
index ab732ae..32c07e6 100644
--- a/src/yamlWorker.ts
+++ b/src/yamlWorker.ts
@@ -57,11 +57,7 @@ export class YAMLWorker {
     return this._languageService.doHover(document, position);
   }
 
-  format(
-    uri: string,
-    range: ls.Range,
-    options: yamlService.CustomFormatterOptions,
-  ): PromiseLike<ls.TextEdit[]> {
+  format(uri: string, options: yamlService.CustomFormatterOptions): PromiseLike<ls.TextEdit[]> {
     const document = this._getTextDocument(uri);
     const textEdits = this._languageService.doFormat(document, options);
     return Promise.resolve(textEdits);