Index: trunk/build.xml
===================================================================
--- trunk/build.xml	(revision 17884)
+++ trunk/build.xml	(revision 17895)
@@ -513,5 +513,6 @@
         </jacoco:report>
     </target>
-    <target name="dist-optimized" depends="dist" description="Build an optimized JOSM distribution file">
+    <!-- ProGuard does not woth with Java 17 yet: https://github.com/Guardsquare/proguard/issues/132 -->
+    <target name="dist-optimized" depends="dist" unless="isJava17" description="Build an optimized JOSM distribution file">
         <ivy:cachepath log="download-only" file="${tools.ivy}" pathid="proguard.classpath" conf="proguard"/>
         <taskdef resource="proguard/ant/task.properties" classpathref="proguard.classpath"/>