diff --git a/test/pitytest11/src/AbstractPityUnit.cc b/test/pitytest11/src/AbstractPityUnit.cc
index b8fd3f3..feff3d1 100644
--- a/test/pitytest11/src/AbstractPityUnit.cc
+++ b/test/pitytest11/src/AbstractPityUnit.cc
@@ -51,6 +51,16 @@ namespace pEp {
             _init();
         }
 
+        AbstractPityUnit &AbstractPityUnit::operator=(const AbstractPityUnit &rhs)
+        {
+            _procUnitNr = rhs._procUnitNr;
+            _exec_mode = rhs._exec_mode;
+            _transport = rhs._transport;
+            _transport_endpoints = rhs._transport_endpoints;
+            return *this;
+        }
+
+
         void AbstractPityUnit::_init()
         {
             _log_mutex = std::make_shared<fs_mutex>("log.mutex");
@@ -447,7 +457,5 @@ namespace pEp {
             Adapter::pEpLog::log(msg, _color());
             _log_mutex->release();
         }
-
-
     } // namespace PityTest11
 } // namespace pEp
diff --git a/test/pitytest11/src/AbstractPityUnit.hh b/test/pitytest11/src/AbstractPityUnit.hh
index edeac75..406e30a 100644
--- a/test/pitytest11/src/AbstractPityUnit.hh
+++ b/test/pitytest11/src/AbstractPityUnit.hh
@@ -31,6 +31,8 @@ namespace pEp {
                 INHERIT
             };
 
+            // Constructors
+            // ------------
             // RootNode
             explicit AbstractPityUnit(
                 const std::string& name,
@@ -45,6 +47,9 @@ namespace pEp {
             // Copy
             explicit AbstractPityUnit(const AbstractPityUnit& rhs, AbstractPityUnit& self);
 
+            // copy-assign
+            AbstractPityUnit& operator=(const AbstractPityUnit& rhs);
+
             AbstractPityUnit* clone() override = 0;
 
             // Read-Write