diff --git a/conformance_test/OOP_tests/negative_tests/50101_classes.script b/conformance_test/OOP_tests/negative_tests/50101_classes.script
index a631563ab083ff0be24dfffeba6f5d1b5e7434d9..3bdfe550dcbc50ada6f421f396e7c4b8a1cc068d 100644
--- a/conformance_test/OOP_tests/negative_tests/50101_classes.script
+++ b/conformance_test/OOP_tests/negative_tests/50101_classes.script
@@ -998,6 +998,7 @@ error: at or before token `template': syntax error, unexpected TemplateKeyword,
  ** @purpose 5.1.1.0, Ensure that passing of object references to the create operation of a component type or a function started on another component is not allowed.
  ** @verdict pass reject
 *****************************************************************/
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=568744 - fixed
 module NegSem_50101_top_level_004 "TTCN-3:2018 Object-Oriented" {
     
     type component GeneralComp {
@@ -1032,16 +1033,16 @@ module NegSem_50101_top_level_004 "TTCN-3:2018 Object-Oriented" {
         setverdict(pass);
     }
 
-  /*  testcase TC_NegSem_50101_top_level_004_02() runs on GeneralComp {
+    testcase TC_NegSem_50101_top_level_004_02() runs on GeneralComp {
         var MyEmptyClass v_MyClass := MyEmptyClass.create();
         var MyNotEmptyComponent v_MyComponent := MyNotEmptyComponent.create alive;
         v_MyComponent.start(doSomething(v_MyClass)); //not allowed
         setverdict(pass);
     }
-*/
+
     control {
         execute(TC_NegSem_50101_top_level_004_01());
-     //   execute(TC_NegSem_50101_top_level_004_02());
+        execute(TC_NegSem_50101_top_level_004_02());
     }
 }
 <END_MODULE>
diff --git a/conformance_test/OOP_tests/negative_tests/50101_objects.script b/conformance_test/OOP_tests/negative_tests/50101_objects.script
index c978a1014206ea88f50008b8c7e5e677e9377c18..ee3b63d0049a63c3d94e764bc41eebb89686469e 100644
--- a/conformance_test/OOP_tests/negative_tests/50101_objects.script
+++ b/conformance_test/OOP_tests/negative_tests/50101_objects.script
@@ -75,6 +75,7 @@ This TD contains negative OOP test  modules from ETSI TTCN3 Conformance Test's 5
  ** @purpose 5.1.2.2, Ensure that Object References shall not be passed as actual parameter or part of an actual parameter.
  ** @verdict pass reject
 *****************************************************************/
+//https://bugs.eclipse.org/bugs/show_bug.cgi?id=568748 - fixed
 module NegSem_5010202_ObjectReferences_001 "TTCN-3:2018 Object-Oriented" {
     
     type component GeneralComp {
@@ -99,7 +100,7 @@ module NegSem_5010202_ObjectReferences_001 "TTCN-3:2018 Object-Oriented" {
     testcase TC_NegSem_5010202_ObjectReferences_001() runs on GeneralComp {
         var MyClass v_a := MyClass.create(7);
         var GeneralComp v_MyGeneralComp := GeneralComp.create;
-       v_MyGeneralComp.start(f_something(v_a)); //not allowed   // C++ error is thrown 
+       v_MyGeneralComp.start(f_something(v_a)); //not allowed 
         if (v_a.getX() == 7) { 
             setverdict(pass);
         } else {