diff --git a/src/core/core.ticks.js b/src/core/core.ticks.js
index 2dbc274..dcec504 100644
--- a/src/core/core.ticks.js
+++ b/src/core/core.ticks.js
@@ -109,11 +109,12 @@ module.exports = {
 
 			var endExp = Math.floor(helpers.log10(dataRange.max));
 			var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
+			var minNotZero = dataRange.minNotZero || 1;
 			var exp, significand;
 
 			if (tickVal === 0) {
-				exp = Math.floor(helpers.log10(dataRange.minNotZero));
-				significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
+				exp = Math.floor(helpers.log10(minNotZero));
+				significand = Math.floor(minNotZero / Math.pow(10, exp));
 
 				ticks.push(tickVal);
 				tickVal = significand * Math.pow(10, exp);