diff --git a/src/core/core.scale.js b/src/core/core.scale.js
index 0c1413d4a03..cc45a0be645 100644
--- a/src/core/core.scale.js
+++ b/src/core/core.scale.js
@@ -130,6 +130,8 @@ function computeLabelSizes(ctx, tickFonts, ticks, caches) {
 	var widths = [];
 	var heights = [];
 	var offsets = [];
+	var widestLabelSize = 0;
+	var highestLabelSize = 0;
 	var i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel, widest, highest;
 
 	for (i = 0; i < length; ++i) {
@@ -157,11 +159,13 @@ function computeLabelSizes(ctx, tickFonts, ticks, caches) {
 		widths.push(width);
 		heights.push(height);
 		offsets.push(lineHeight / 2);
+		widestLabelSize = Math.max(width, widestLabelSize);
+		highestLabelSize = Math.max(height, highestLabelSize);
 	}
 	garbageCollect(caches, length);
 
-	widest = widths.indexOf(Math.max.apply(null, widths));
-	highest = heights.indexOf(Math.max.apply(null, heights));
+	widest = widths.indexOf(widestLabelSize);
+	highest = heights.indexOf(highestLabelSize);
 
 	function valueAt(idx) {
 		return {