Index: /trunk/build.xml
===================================================================
--- /trunk/build.xml	(revision 12236)
+++ /trunk/build.xml	(revision 12237)
@@ -438,4 +438,6 @@
                 <junit printsummary="yes" fork="true" forkmode="once">
                     <jvmarg value="-Dfile.encoding=UTF-8"/>
+                    <jvmarg value="--add-modules" if:set="isJava9" />
+                    <jvmarg value="java.se.ee" if:set="isJava9" />
                     <jvmarg value="--add-exports" if:set="isJava9" />
                     <jvmarg value="java.base/sun.security.util=ALL-UNNAMED" if:set="isJava9" />