diff --git a/Sources/Voxelotl/World.swift b/Sources/Voxelotl/World.swift
index 4f95a43..b1517ff 100644
--- a/Sources/Voxelotl/World.swift
+++ b/Sources/Voxelotl/World.swift
@@ -63,7 +63,7 @@ public class World {
     self._generator.reset(seed: seed)
     let orig = SIMD3(width, height, depth) / 2
 
-    let localChunks = ConcurrentDictionary<SIMD3<Int>, Chunk>()
+    let localChunks = ConcurrentDictionary<ChunkID, Chunk>()
     let queue = OperationQueue()
     queue.qualityOfService = .userInitiated
     for z in 0..<depth {