diff --git a/src/laybasic/laybasic/layIndexedNetlistModel.cc b/src/laybasic/laybasic/layIndexedNetlistModel.cc
index 4dd2ea7c3..985e5df57 100644
--- a/src/laybasic/laybasic/layIndexedNetlistModel.cc
+++ b/src/laybasic/laybasic/layIndexedNetlistModel.cc
@@ -356,7 +356,7 @@ IndexedNetlistModel::net_subcircuit_pin_pair
 SingleIndexedNetlistModel::subcircuit_pinref_from_index (const subcircuit_pair &subcircuits, size_t index) const
 {
   if (! subcircuits.first) {
-    return IndexedNetlistModel::net_subcircuit_pin_pair (0, 0);
+    return IndexedNetlistModel::net_subcircuit_pin_pair ((const db::NetSubcircuitPinRef *) 0, (const db::NetSubcircuitPinRef *) 0);
   }
 
   std::map<subcircuit_pair, std::vector<net_subcircuit_pin_pair> >::iterator i = m_subcircuit_pins_by_index.find (subcircuits);