diff --git a/index.js b/index.js
index 5a04cbda42..dd37d74d28 100644
--- a/index.js
+++ b/index.js
@@ -168,7 +168,7 @@ function makeError(result, options) {
 		error.all = result.all;
 	}
 
-	if (error.bufferedData) {
+	if ('bufferedData' in error) {
 		delete error.bufferedData;
 	}