diff --git a/plugins/legend.js b/plugins/legend.js
index <HASH>..<HASH> 100644
--- a/plugins/legend.js
+++ b/plugins/legend.js
@@ -151,8 +151,10 @@ legend.prototype.predraw = function(e) {
   // TODO(danvk): only use real APIs for this.
   e.dygraph.graphDiv.appendChild(this.legend_div_);
   var area = e.dygraph.plotter_.area;
-  this.legend_div_.style.left = area.x + area.w - e.dygraph.getOption("labelsDivWidth") - 1 + "px";
+  var labelsDivWidth = e.dygraph.getOption("labelsDivWidth");
+  this.legend_div_.style.left = area.x + area.w - labelsDivWidth - 1 + "px";
   this.legend_div_.style.top = area.y + "px";
+  this.legend_div_.style.width = labelsDivWidth + "px";
 };
 
 /**
Allow labelsDivWidth updates to be reflected in already-drawn graphs.