diff --git a/FileSaver/FileSaver-tests.ts b/FileSaver/FileSaver-tests.ts
index 6a5426a6a..4cfae373e 100644
--- a/FileSaver/FileSaver-tests.ts
+++ b/FileSaver/FileSaver-tests.ts
@@ -6,6 +6,7 @@
 function testSaveAs() {
     var data: Blob = new Blob(["Hello, world!"], {type: "text/plain;charset=utf-8"});
     var filename: string = 'hello world.txt';
-    
-    saveAs(data, filename);
+    var disableAutoBOM = true;
+
+    saveAs(data, filename, disableAutoBOM);
 }
diff --git a/FileSaver/FileSaver.d.ts b/FileSaver/FileSaver.d.ts
index 0b6cc75d6..fa5f31947 100644
--- a/FileSaver/FileSaver.d.ts
+++ b/FileSaver/FileSaver.d.ts
@@ -20,8 +20,14 @@ interface FileSaver {
          * @summary File name.
          * @type {DOMString}
          */
-        filename: string
+	 filename: string,
+
+	 /**
+	  * @summary Disable Unicode text encoding hints or not.
+	  * @type {boolean}
+	  */
+	 disableAutoBOM?: boolean
     ): void
 }
 
-declare var saveAs: FileSaver;
\ No newline at end of file
+declare var saveAs: FileSaver;