diff --git a/src/main/java/org/embeddedt/modernfix/world/gen/ChunkBiomeLookup.java b/src/main/java/org/embeddedt/modernfix/world/gen/ChunkBiomeLookup.java
index 8c368c92..03c9b6bb 100644
--- a/src/main/java/org/embeddedt/modernfix/world/gen/ChunkBiomeLookup.java
+++ b/src/main/java/org/embeddedt/modernfix/world/gen/ChunkBiomeLookup.java
@@ -99,6 +99,7 @@ public class ChunkBiomeLookup implements Function<BlockPos, Holder<Biome>> {
     public void dispose() {
         // Make sure we do not retain strong references to the biome holders
         Arrays.fill(biomes, null);
+        this.fallbackManager = null;
     }
 
     private boolean fetchBiomes(BiomeManager.NoiseBiomeSource source) {