diff --git a/src/etc/testcases/taskdefs/apt.xml b/src/etc/testcases/taskdefs/apt.xml
index a9724b04c..6c6af32c4 100644
--- a/src/etc/testcases/taskdefs/apt.xml
+++ b/src/etc/testcases/taskdefs/apt.xml
@@ -94,6 +94,7 @@
        destdir="${classes2.dir}"
        debug="on"
        compile="true"
+       fork="true"
        factory="DistributedAnnotationFactory"
        preprocessdir="${preprocess.dir}">
        <factorypath path="${classes.dir}" />