diff --git a/tooling/metamodel-generator/src/test/java/org/hibernate/processor/test/util/WithClasses.java b/tooling/metamodel-generator/src/test/java/org/hibernate/processor/test/util/WithClasses.java
index 523a4e7079..dfc6b6f5fc 100644
--- a/tooling/metamodel-generator/src/test/java/org/hibernate/processor/test/util/WithClasses.java
+++ b/tooling/metamodel-generator/src/test/java/org/hibernate/processor/test/util/WithClasses.java
@@ -25,4 +25,6 @@ public @interface WithClasses {
 	 * @return an array of classes which should be complied prior to compiling the actual test classes
 	 */
 	Class<?>[] preCompile() default { };
+
+	String[] sources() default {};
 }