From b24e42b1bd8c2d15a2991da763dff50bcf25774e Mon Sep 17 00:00:00 2001
From: Jukka Kurkela <jukka.kurkela@gmail.com>
Date: Thu, 19 Sep 2019 05:18:32 +0300
Subject: [PATCH] Make sure zeroLineIndex is defined (#6528)

---
 src/core/core.scale.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/core/core.scale.js b/src/core/core.scale.js
index 94fea1c9347..74efdb4395a 100644
--- a/src/core/core.scale.js
+++ b/src/core/core.scale.js
@@ -202,6 +202,9 @@ function parseTickFontOptions(options) {
 }
 
 var Scale = Element.extend({
+
+	zeroLineIndex: 0,
+
 	/**
 	 * Get the padding needed for the scale
 	 * @method getPadding