diff --git a/Server-setup.md b/Server-setup.md
index fffbb30..560aec5 100644
--- a/Server-setup.md
+++ b/Server-setup.md
@@ -77,7 +77,7 @@ public class MainDemo {
         minecraftServer.start("localhost", 55555);
     }
 
-    private static class GeneratorDemo extends ChunkGenerator {
+    private static class GeneratorDemo implements ChunkGenerator {
 
         @Override
         public void generateChunkData(ChunkBatch batch, int chunkX, int chunkZ) {