diff --git a/src/Mod/Part/Gui/TaskAttacher.cpp b/src/Mod/Part/Gui/TaskAttacher.cpp
index 053403e7566c..5f3ebe9b7786 100644
--- a/src/Mod/Part/Gui/TaskAttacher.cpp
+++ b/src/Mod/Part/Gui/TaskAttacher.cpp
@@ -600,7 +600,7 @@ void TaskAttacher::addToReference(const std::vector<SubAndObjName>& pairs)
 
 void TaskAttacher::addToReference(SubAndObjName pair)
 {
-    addToReference({ pair });
+    addToReference({{{ pair }}});
 }
 
 void TaskAttacher::onAttachmentOffsetChanged(double /*val*/, int idx)