diff --git a/plugins/org.etsi.mts.tdl.execution.java.codegen/src/org/etsi/mts/tdl/execution/java/codegen/JUnitTestGenerator.java b/plugins/org.etsi.mts.tdl.execution.java.codegen/src/org/etsi/mts/tdl/execution/java/codegen/JUnitTestGenerator.java
index a421f41426fcfa7959053d35718eeeb5ffca6453..68e417e31e0fc6ea75d969fb3095265e46327b63 100644
--- a/plugins/org.etsi.mts.tdl.execution.java.codegen/src/org/etsi/mts/tdl/execution/java/codegen/JUnitTestGenerator.java
+++ b/plugins/org.etsi.mts.tdl.execution.java.codegen/src/org/etsi/mts/tdl/execution/java/codegen/JUnitTestGenerator.java
@@ -1824,6 +1824,9 @@ public class JUnitTestGenerator extends Renderer {
 						if (isCollection)
 							append(">");
 						append("()");
+						
+					} else if (isCollection) {
+						append("new java.util.ArrayList()");
 					}
 				}
 			}