diff --git a/designer/addons.ui b/designer/addons.ui
index 0c620349c..8ac9b40c8 100644
--- a/designer/addons.ui
+++ b/designer/addons.ui
@@ -32,7 +32,7 @@
      <item>
       <widget class="QListWidget" name="addonList">
        <property name="selectionMode">
-        <enum>QAbstractItemView::ContiguousSelection</enum>
+        <enum>QAbstractItemView::ExtendedSelection</enum>
        </property>
       </widget>
      </item>