--- a/qtiplot/src/core/ApplicationWindow.cpp	
+++ a/qtiplot/src/core/ApplicationWindow.cpp	
@@ -9526,11 +9529,9 @@ void ApplicationWindow::deleteSelectedItems()
 
 	folders->blockSignals(true);
 	foreach(item, lst){
-		if (item->rtti() == FolderListItem::RTTI){
-			Folder *f = ((FolderListItem *)item)->folder();
-			if (deleteFolder(f))
-				delete item;
-		} else
+		if (item->rtti() == FolderListItem::RTTI)
+			deleteFolder(((FolderListItem *)item)->folder());
+		else
 			((WindowListItem *)item)->window()->close();
 	}
 	folders->blockSignals(false);