diff --git a/custom-editor-sample/src/vscode.proposed.d.ts b/custom-editor-sample/src/vscode.proposed.d.ts
index b24a9b21..979418dd 100644
--- a/custom-editor-sample/src/vscode.proposed.d.ts
+++ b/custom-editor-sample/src/vscode.proposed.d.ts
@@ -1431,7 +1431,7 @@ declare module 'vscode' {
 		 * @param viewType The associated uri for this document.
 		 * @param uri The associated viewType for this document.
 		 */
-		constructor(viewType: string, uri: Uri);
+		constructor(uri: Uri);
 
 		/**
 		 * The associated viewType for this document.