diff --git a/src/main/java/me/itzg/helpers/sync/SynchronizingFileVisitor.java b/src/main/java/me/itzg/helpers/sync/SynchronizingFileVisitor.java
index 5c777ae6..07b0e293 100644
--- a/src/main/java/me/itzg/helpers/sync/SynchronizingFileVisitor.java
+++ b/src/main/java/me/itzg/helpers/sync/SynchronizingFileVisitor.java
@@ -27,7 +27,8 @@ public SynchronizingFileVisitor(Path src, Path dest, boolean skipNewerInDestinat
     static int walkDirectories(List<Path> srcDest, boolean skipNewerInDestination,
         FileProcessor fileProcessor
     ) {
-        final Path dest = srcDest.getLast();
+        // TODO can use getLast() with java 21
+        final Path dest = srcDest.get(srcDest.size() - 1);
 
         for (final Path src : srcDest.subList(0, srcDest.size() - 1)) {
             if (Files.isDirectory(src)) {