diff --git a/content/treestyletab/treestyletabbrowser.js b/content/treestyletab/treestyletabbrowser.js
index aa4eb62d..5c12a189 100644
--- a/content/treestyletab/treestyletabbrowser.js
+++ b/content/treestyletab/treestyletabbrowser.js
@@ -1427,6 +1427,7 @@ TreeStyleTabBrowser.prototype = {
 					function(aTab, aIndex) {
 						this.partTab(aTab, true);
 						if (aIndex == 0) {
+							nextFocusedTab = aTab;
 							indentModifiedTabs.push(aTab);
 							if (parentTab) {
 								this.attachTabTo(aTab, parentTab, {