diff --git a/core/scrollbar.js b/core/scrollbar.js
index 6a3e738bd..14ee7eac3 100644
--- a/core/scrollbar.js
+++ b/core/scrollbar.js
@@ -306,8 +306,7 @@ Blockly.Scrollbar.prototype.resizeHorizontal_ = function(hostMetrics) {
   this.svgKnob_.setAttribute('width', Math.max(0, innerLength));
   this.xCoordinate = hostMetrics.absoluteLeft + 0.5;
   if (this.pair_ && this.workspace_.RTL) {
-    //this.xCoordinate += hostMetrics.absoluteLeft +
-    //    Blockly.Scrollbar.scrollbarThickness;
+    this.xCoordinate += Blockly.Scrollbar.scrollbarThickness;
   }
   // Horizontal toolbar should always be just above the bottom of the workspace.
   this.yCoordinate = hostMetrics.absoluteTop + hostMetrics.viewHeight -