diff --git a/compiler2/record_of.c b/compiler2/record_of.c
index 2308ba76e85b8e9f891493db837e52480d5af5f3..806014a8d851a5a2672266926f86adb70b1fc46b 100644
--- a/compiler2/record_of.c
+++ b/compiler2/record_of.c
@@ -636,6 +636,10 @@ void defRecordOfClass1(const struct_of_def *sdef, output_struct *output)
     "        Module_Param* const curr = mp->get_elem(i);\n"
     "        if (curr->get_type()!=Module_Param::MP_NotUsed) {\n"
     "          (*this)[i].set_param(*curr);\n"
+    "          if (!(*this)[i].is_bound()) {\n"
+    "            delete val_ptr->value_elements[i];\n"
+    "            val_ptr->value_elements[i] = NULL;\n"
+    "          }\n"
     "        }\n"
     "      }\n"
     "      break;\n"
@@ -643,6 +647,10 @@ void defRecordOfClass1(const struct_of_def *sdef, output_struct *output)
     "      for (size_t i=0; i<mp->get_size(); ++i) {\n"
     "        Module_Param* const curr = mp->get_elem(i);\n"
     "        (*this)[curr->get_id()->get_index()].set_param(*curr);\n"
+    "        if (!(*this)[curr->get_id()->get_index()].is_bound()) {\n"
+    "          delete val_ptr->value_elements[curr->get_id()->get_index()];\n"
+    "          val_ptr->value_elements[curr->get_id()->get_index()] = NULL;\n"
+    "        }\n"
     "      }\n"
     "      break;\n"
     "    default:\n"
diff --git a/core2/Basetype2.cc b/core2/Basetype2.cc
index 1ddac029f5783313b5f287a4906a5fc9638c986f..9248c4b83ada915fbe615866bba0a042b2a059b2 100644
--- a/core2/Basetype2.cc
+++ b/core2/Basetype2.cc
@@ -2468,6 +2468,11 @@ void Record_Of_Type::set_param(Module_Param& param) {
         Module_Param* const curr = mp->get_elem(i);
         if (curr->get_type()!=Module_Param::MP_NotUsed) {
           get_at(i)->set_param(*curr);
+          if (!get_at(i)->is_bound()) {
+            // use null pointers for unbound elements
+            delete val_ptr->value_elements[i];
+            val_ptr->value_elements[i] = NULL;
+          }
         }
       }
       break;
@@ -2475,6 +2480,11 @@ void Record_Of_Type::set_param(Module_Param& param) {
       for (size_t i=0; i<mp->get_size(); ++i) {
         Module_Param* const current = mp->get_elem(i);
         get_at(current->get_id()->get_index())->set_param(*current);
+        if (!get_at(current->get_id()->get_index())->is_bound()) {
+          // use null pointers for unbound elements
+          delete val_ptr->value_elements[current->get_id()->get_index()];
+          val_ptr->value_elements[current->get_id()->get_index()] = NULL;
+        }
       }
       break;
     default:
diff --git a/regression_test/recofOper/TrecofOper.ttcn b/regression_test/recofOper/TrecofOper.ttcn
index b2458f2b3ddd768949ab9d89370cecef4254c319..4014102740ba861cf53bda7908cd9f9a91054586 100644
--- a/regression_test/recofOper/TrecofOper.ttcn
+++ b/regression_test/recofOper/TrecofOper.ttcn
@@ -1317,6 +1317,30 @@ testcase tc_sizeof_lengthof_standard6() runs on recofOper_mycomp {
   if(lengthof(tr_roI5)==3) { setverdict(pass)}else { setverdict(fail) };
 }
 
+// test cases for bug 494614:
+// when initializing a record-of-record element with an empty value ('{}') through module parameters,
+// an actual unbound record element was created, instead of the usual null pointer used for unbound elements;
+// copying this empty record caused a dynamic test case error
+
+modulepar recofOper_myrecof3 recofOper_mymodulepar; // initialized with value list notation
+modulepar recofOper_myrecof3 recofOper_mymodulepar2; // initialized with assignment notation
+
+testcase tc_empty_record_element() runs on recofOper_mycomp {
+  var recofOper_myrecof3 copy := recofOper_mymodulepar;
+  copy[0].x1 := omit; // this is where the record-of is actually copied, and where the DTE occured
+  copy[0].x2 := 1.0;
+  if (copy == { { omit, 1.0 } }) { setverdict(pass); }
+  else { setverdict(fail); }
+}
+
+testcase tc_empty_record_element2() runs on recofOper_mycomp {
+  var recofOper_myrecof3 copy := recofOper_mymodulepar2;
+  copy[0].x1 := omit; // this is where the record-of is actually copied, and where the DTE occured
+  copy[0].x2 := 1.0;
+  if (copy == { { omit, 1.0 } }) { setverdict(pass); }
+  else { setverdict(fail); }
+}
+
 control {
   const recofOper_trecord cl_temp1:={ x1:=omit, x2:=3.4 }; // constants in the control part
   const recofOper_trecof cl_temp2:={ 'AF12'O };
@@ -1390,6 +1414,9 @@ control {
   execute(tc_sizeof_lengthof_standard2());
   execute(tc_sizeof_lengthof_standard4());
   execute(tc_sizeof_lengthof_standard6());
+  
+  execute(tc_empty_record_element());
+  execute(tc_empty_record_element2());
 }
 
 }
diff --git a/regression_test/recofOper/config.cfg b/regression_test/recofOper/config.cfg
index 1e893b4828997470684056ffa092a4f2dec034d0..eb20bd25a39909fa4d6c2ccbba10cb3465e69afa 100644
--- a/regression_test/recofOper/config.cfg
+++ b/regression_test/recofOper/config.cfg
@@ -12,6 +12,8 @@
 #
 ###############################################################################
 [MODULE_PARAMETERS]
+recofOper_mymodulepar := { {} }
+recofOper_mymodulepar2 := { [0] := {} }
 [LOGGING]
 Logfile := "recofOper.log"
 FileMask := LOG_ALL
diff --git a/regression_test/recofOper/config_rt2.cfg b/regression_test/recofOper/config_rt2.cfg
index 268d161835b217f0bd97b53bd8603cac18a698a1..7572603a43cb89bf868ef515115976cbc3d36dfe 100644
--- a/regression_test/recofOper/config_rt2.cfg
+++ b/regression_test/recofOper/config_rt2.cfg
@@ -11,6 +11,8 @@
 #
 ###############################################################################
 [MODULE_PARAMETERS]
+recofOper_mymodulepar := { {} }
+recofOper_mymodulepar2 := { [0] := {} }
 [LOGGING]
 Logfile := "recofOper.log"
 FileMask := LOG_ALL