diff --git a/content/treestyletab/treestyletab.js b/content/treestyletab/treestyletab.js
index 1c6e521d..986856c4 100644
--- a/content/treestyletab/treestyletab.js
+++ b/content/treestyletab/treestyletab.js
@@ -1918,10 +1918,13 @@ catch(e) {
  
 	removeTabSubtree : function TSTService_removeTabSubtree(aTabOrTabs, aOnlyChildren) 
 	{
-		var tabs = this.gatherSubtreeMemberTabs(aTabOrTabs);
+		var tabs = this.gatherSubtreeMemberTabs(aTabOrTabs, aOnlyChildren);
 		if (!this.warnAboutClosingTabs(tabs.length))
 			return;
 
+		if (aOnlyChildren)
+			tabs = this.gatherSubtreeMemberTabs(aTabOrTabs);
+
 		this.splitTabsToSubtrees(tabs).forEach(function(aTabs) {
 			if (!this.fireTabSubtreeClosingEvent(aTabs[0], aTabs))
 				return;