Index: /trunk/autoquest-plugin-uml/src/main/java/de/ugoe/cs/autoquest/plugin/uml/UMLUtils.java
===================================================================
--- /trunk/autoquest-plugin-uml/src/main/java/de/ugoe/cs/autoquest/plugin/uml/UMLUtils.java	(revision 1931)
+++ /trunk/autoquest-plugin-uml/src/main/java/de/ugoe/cs/autoquest/plugin/uml/UMLUtils.java	(revision 1932)
@@ -1405,11 +1405,8 @@
                 (Expression) replyMessage.createArgument(param.getName(), param.getType(),
                                                          UMLPackage.Literals.EXPRESSION);
+            ValueSpecification operand =
+                    argument.createOperand(null, param.getType(), UMLPackage.Literals.LITERAL_NULL);
             if (isOutParameter(param)) {
-                ValueSpecification operand =
-                    argument.createOperand(null, param.getType(), UMLPackage.Literals.LITERAL_NULL);
                 operand.applyStereotype(UTPUtils.getLiteralAnyStereotype(param.getModel()));
-            }
-            else {
-                argument.createOperand(null, param.getType(), UMLPackage.Literals.LITERAL_NULL);
             }
         }