Index: /trunk/build.xml
===================================================================
--- /trunk/build.xml	(revision 19378)
+++ /trunk/build.xml	(revision 19379)
@@ -493,5 +493,5 @@
                         <sysproperty key="josm.test.data" value="${test.dir}/data"/>
                         <sysproperty key="java.awt.headless" value="${test.headless}"/>
-                        <sysproperty key="java.security.manager" value="allow" if:set="isJava17" />
+                        <sysproperty key="java.security.manager" value="allow" if:set="isJava17" unless:set="isJava24" />
                         <sysproperty key="glass.platform" value="Monocle"/>
                         <sysproperty key="monocle.platform" value="Headless"/>