Index: /trunk/build.xml
===================================================================
--- /trunk/build.xml	(revision 17695)
+++ /trunk/build.xml	(revision 17696)
@@ -481,5 +481,4 @@
                         <jvmarg value="--add-opens" if:set="isJava9" />
 	                    <jvmarg value="java.prefs/java.util.prefs=ALL-UNNAMED" if:set="isJava9" />
-                        <jvmarg value="-XX:+ShowCodeDetailsInExceptionMessages" if:set="isJava14" unless:set="isJava15" />
 	                    <sysproperty key="josm.home" value="${test.dir}/config/@{testfamily}-josm.home"/>
 	                    <sysproperty key="josm.test.data" value="${test.dir}/data"/>