diff --git a/flat_world/src/main/java/mc/world/flat/FlatWorld.java b/flat_world/src/main/java/mc/world/flat/FlatWorld.java
index 7c05692..abeb0d0 100644
--- a/flat_world/src/main/java/mc/world/flat/FlatWorld.java
+++ b/flat_world/src/main/java/mc/world/flat/FlatWorld.java
@@ -38,4 +38,9 @@ public class FlatWorld implements World {
     public void setChunk(int x, int y, int z, Chunk chunk) {
         throw new UnsupportedOperationException();
     }
+
+    @Override
+    public long getSeed() {
+        return 0;
+    }
 }