diff --git a/index.js b/index.js
index 54025448..6e7896a9 100644
--- a/index.js
+++ b/index.js
@@ -812,7 +812,7 @@ module.exports = input => {
 		}
 	}
 
-	if (check([0x46, 0x4F, 0x52, 0x4D, 0x00])) {
+	if (check([0x46, 0x4F, 0x52, 0x4D])) {
 		return {
 			ext: 'aif',
 			mime: 'audio/aiff'