diff --git a/core/scrollbar.js b/core/scrollbar.js
index c30f45cd0..e379dca4b 100644
--- a/core/scrollbar.js
+++ b/core/scrollbar.js
@@ -599,6 +599,7 @@ Blockly.Scrollbar.prototype.setVisible = function(visible) {
  * @private
  */
 Blockly.Scrollbar.prototype.onMouseDownBar_ = function(e) {
+  this.workspace_.markFocused();
   Blockly.Touch.clearTouchIdentifier();  // This is really a click.
   this.cleanUp_();
   if (Blockly.isRightButton(e)) {
@@ -638,6 +639,7 @@ Blockly.Scrollbar.prototype.onMouseDownBar_ = function(e) {
  * @private
  */
 Blockly.Scrollbar.prototype.onMouseDownHandle_ = function(e) {
+  this.workspace_.markFocused();
   this.cleanUp_();
   if (Blockly.isRightButton(e)) {
     // Right-click.