diff --git a/src/main/java/com/thebrokenrail/energonrelics/block/entity/structure/StructureGeneratorBlockEntity.java b/src/main/java/com/thebrokenrail/energonrelics/block/entity/structure/StructureGeneratorBlockEntity.java
index 5bf40eb..2555071 100644
--- a/src/main/java/com/thebrokenrail/energonrelics/block/entity/structure/StructureGeneratorBlockEntity.java
+++ b/src/main/java/com/thebrokenrail/energonrelics/block/entity/structure/StructureGeneratorBlockEntity.java
@@ -20,6 +20,7 @@ public class StructureGeneratorBlockEntity extends BlockEntity {
         StructurePart<?> create(World world, Random random, List<StructurePart.Transformation> transformations);
     }
 
+    private boolean hasSeed = false;
     private long seed = 0;
     private boolean generated = false;
 
@@ -31,12 +32,14 @@ public class StructureGeneratorBlockEntity extends BlockEntity {
     }
 
     public void setSeed(long seed) {
+        hasSeed = true;
         this.seed = seed;
     }
 
     @Override
     public CompoundTag toTag(CompoundTag tag) {
         super.toTag(tag);
+        tag.putBoolean("HasSeed", hasSeed);
         tag.putLong("Seed", seed);
         tag.putBoolean("Generated", generated);
         return tag;
@@ -45,12 +48,17 @@ public class StructureGeneratorBlockEntity extends BlockEntity {
     @Override
     public void fromTag(BlockState state, CompoundTag tag) {
         super.fromTag(state, tag);
+        hasSeed = tag.getBoolean("HasSeed");
         seed = tag.getLong("Seed");
         generated = tag.getBoolean("Generated");
     }
 
     public void generate() {
         if (hasWorld() && !Objects.requireNonNull(getWorld()).isClient() && !generated) {
+            if (!hasSeed) {
+                seed = getWorld().random.nextLong();
+            }
+
             Direction facing = getCachedState().get(StructureGeneratorBlock.HORIZONTAL_FACING);
             generated = true;
             new StructurePlacer(factory.create(getWorld(), new Random(seed), Collections.singletonList(StructurePart.directionToTransformation(facing)))).place(getWorld(), getPos());