From ee862e3adfd927175a573ee9198eb395d0159cf2 Mon Sep 17 00:00:00 2001
From: Robin Nilsson <robin.nilsson85@gmail.com>
Date: Thu, 15 Aug 2019 08:19:06 +0200
Subject: [PATCH] Fix issue #1536

Fix issue #1536
---
 bits/90_utils.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/bits/90_utils.js b/bits/90_utils.js
index 7dfe1b3..523d3ae 100644
--- a/bits/90_utils.js
+++ b/bits/90_utils.js
@@ -51,6 +51,7 @@ function sheet_to_json(sheet/*:Worksheet*/, opts/*:?Sheet2JSONOpts*/) {
 	if(o.header === 1) header = 1;
 	else if(o.header === "A") header = 2;
 	else if(Array.isArray(o.header)) header = 3;
+	else if(o.header == null) header = 0;
 	switch(typeof range) {
 		case 'string': r = safe_decode_range(range); break;
 		case 'number': r = safe_decode_range(sheet["!ref"]); r.s.r = range; break;