diff --git a/src/util/ThreadPool.hpp b/src/util/ThreadPool.hpp
index dd692d203..2c743e37d 100644
--- a/src/util/ThreadPool.hpp
+++ b/src/util/ThreadPool.hpp
@@ -5,7 +5,6 @@
 #include <optional>
 #include <condition_variable>
 #include <functional>
-#include <iostream>
 #include <queue>
 #include <thread>
 #include <utility>
diff --git a/src/voxels/Chunk.hpp b/src/voxels/Chunk.hpp
index 941034073..4b2fa193d 100644
--- a/src/voxels/Chunk.hpp
+++ b/src/voxels/Chunk.hpp
@@ -29,16 +29,16 @@ public:
     voxel voxels[CHUNK_VOL] {};
     std::shared_ptr<Lightmap> lightmap;
     struct {
-        bool modified : 1;
-        bool ready : 1;
-        bool loaded : 1;
-        bool lighted : 1;
-        bool unsaved : 1;
-        bool loadedLights : 1;
-        bool entities : 1;
-        bool blocksData : 1;
-        bool dirtyHeights : 1;
-        bool inventoriesRemoved : 1;
+        bool modified : 1; // is chunk mesh should be updated
+        bool ready : 1; // is chunk ready for modifications (loaded / generated)
+        bool loaded : 1; // was chunk loaded from region
+        bool lighted : 1; // is lights built (chunk ready to be visualized)
+        bool unsaved : 1; // does chunk contain unsaved changes
+        bool loadedLights : 1; // was lights loaded from cache
+        bool entities : 1; // does chunk contain entities list changes
+        bool blocksData : 1; // does chunk contain block fields changes
+        bool dirtyHeights : 1; // is chunk bottom, top should be recalculated
+        bool inventoriesRemoved : 1; // was block inventories removed since the last save
     } flags {};
 
     uint64_t lastRandomTickId = -1;