diff --git a/dcalc/UnitDelayCalc.cc b/dcalc/UnitDelayCalc.cc
index f376ec7b..8f3d9cc8 100644
--- a/dcalc/UnitDelayCalc.cc
+++ b/dcalc/UnitDelayCalc.cc
@@ -42,7 +42,7 @@ UnitDelayCalc::UnitDelayCalc(StaState *sta) :
 ArcDelayCalc *
 UnitDelayCalc::copy()
 {
-  return new UnitDelayCalc(this);
+  return new UnitDelayCalc(*this);
 }
 
 Parasitic *
diff --git a/search/Search.cc b/search/Search.cc
index 0bc491f3..b4d8f7fe 100644
--- a/search/Search.cc
+++ b/search/Search.cc
@@ -3334,7 +3334,7 @@ FindEndRequiredVisitor::~FindEndRequiredVisitor()
 PathEndVisitor *
 FindEndRequiredVisitor::copy() const
 {
-  return new FindEndRequiredVisitor(sta_);
+  return new FindEndRequiredVisitor(*this);
 }
 
 void
diff --git a/search/Sta.cc b/search/Sta.cc
index 357256d0..286a73c8 100644
--- a/search/Sta.cc
+++ b/search/Sta.cc
@@ -3277,7 +3277,7 @@ EndpointPathEndVisitor::EndpointPathEndVisitor(std::string_view path_group_name,
 PathEndVisitor *
 EndpointPathEndVisitor::copy() const
 {
-  return new EndpointPathEndVisitor(path_group_name_, min_max_, sta_);
+  return new EndpointPathEndVisitor(*this);
 }
 
 void