diff --git a/src/block/RuntimeBlockStateRegistry.php b/src/block/RuntimeBlockStateRegistry.php
index cdcd4b73a..080690c28 100644
--- a/src/block/RuntimeBlockStateRegistry.php
+++ b/src/block/RuntimeBlockStateRegistry.php
@@ -99,7 +99,6 @@ class RuntimeBlockStateRegistry{
 			try{
 				$v->decodeTypeAndStateData($stateData);
 				if($v->computeTypeAndStateData() !== $stateData){
-					//TODO: this should probably be a hard error
 					throw new \LogicException(get_class($block) . "::decodeStateData() accepts invalid state data (returned " . $v->computeTypeAndStateData() . " for input $stateData)");
 				}
 			}catch(InvalidSerializedRuntimeDataException){ //invalid property combination, leave it
diff --git a/src/world/format/io/leveldb/LevelDB.php b/src/world/format/io/leveldb/LevelDB.php
index ff57d14cd..8c0a43287 100644
--- a/src/world/format/io/leveldb/LevelDB.php
+++ b/src/world/format/io/leveldb/LevelDB.php
@@ -627,7 +627,6 @@ class LevelDB extends BaseWorldProvider implements WritableWorldProvider{
 				$subChunks = $this->deserializeLegacyTerrainData($index, $chunkVersion);
 				break;
 			default:
-				//TODO: set chunks read-only so the version on disk doesn't get overwritten
 				throw new CorruptedChunkException("don't know how to decode chunk format version $chunkVersion");
 		}
 
@@ -664,7 +663,7 @@ class LevelDB extends BaseWorldProvider implements WritableWorldProvider{
 		//TODO: tile ticks, biome states (?)
 
 		$chunk = new Chunk(
-			$subChunks, //TODO: maybe missing biomes should be an error?
+			$subChunks,
 			$terrainPopulated
 		);