diff --git a/mosfet/protocol/managers.py b/mosfet/protocol/managers.py
index 1a26130..4ab9c0b 100644
--- a/mosfet/protocol/managers.py
+++ b/mosfet/protocol/managers.py
@@ -7,6 +7,7 @@ from minecraft.networking.packets import clientbound, serverbound
 from mosfet.protocol import packets
 
 from mosfet import utils
+from mosfet.info import blocks
 
 class DataManager:
     def __init__(self, directory):
@@ -42,7 +43,7 @@ class ChunksManager:
     def __init__(self, data_manager):
         self.data = data_manager
         self.chunks = {}
-        self.biomes = {}
+        #self.biomes = {}
         self.index = {}
         self.loading = False
 
@@ -74,7 +75,7 @@ class ChunksManager:
                         coords = (dx + l%16, dy + l//256, dz + l%256//16)
                         self.index[item_id].append(coords)
 
-        self.biomes[(chunk_packet.x, None, chunk_packet.z)] = chunk_packet.biomes # FIXME
+        #self.biomes[(chunk_packet.x, None, chunk_packet.z)] = chunk_packet.biomes # FIXME
         if self.loading:
             print('.', end='', flush=True)
 
@@ -116,6 +117,11 @@ class ChunksManager:
         if not c: return None
         c.set_block_at(x%16, y%16, z%16, block)
 
+        if block in blocks.INDEXED_IDS:
+            if block not in self.index:
+                self.index[block] = []
+            self.index[block].append((x, y, z))
+
     def check_loaded(self, position, steps=1):
         x, y, z = utils.pint(position)
         player_chunk = (x//16, 1, z//16)