diff --git a/src/voxels/voxel.hpp b/src/voxels/voxel.hpp
index 0e19415f..460a6a4f 100644
--- a/src/voxels/voxel.hpp
+++ b/src/voxels/voxel.hpp
@@ -12,8 +12,8 @@ inline constexpr int BLOCK_DIR_DOWN = 0x5;
 
 struct blockstate {
     uint8_t rotation : 3; // block rotation index
-    uint8_t segment : 1;  // segment block bit
-    uint8_t reserved : 4; // reserved bits
+    uint8_t segment :  3; // segment block bits
+    uint8_t reserved : 2; // reserved bits
     uint8_t userbits : 8; // bits for use in block script
 };
 static_assert (sizeof(blockstate) == 2);
@@ -22,7 +22,7 @@ static_assert (sizeof(blockstate) == 2);
 inline constexpr blockstate_t blockstate2int(blockstate b) {
     return static_cast<blockstate_t>(b.rotation) |
            static_cast<blockstate_t>(b.segment) << 3 |
-           static_cast<blockstate_t>(b.reserved) << 4 |
+           static_cast<blockstate_t>(b.reserved) << 6 |
            static_cast<blockstate_t>(b.userbits) << 8;
 }
 
@@ -30,8 +30,8 @@ inline constexpr blockstate_t blockstate2int(blockstate b) {
 inline constexpr blockstate int2blockstate(blockstate_t i) {
     return {
         static_cast<uint8_t>(i & 0b111),
-        static_cast<uint8_t>((i >> 3) & 0b1),
-        static_cast<uint8_t>((i >> 4) & 0b1111),
+        static_cast<uint8_t>((i >> 3) & 0b111),
+        static_cast<uint8_t>((i >> 6) & 0b11),
         static_cast<uint8_t>((i >> 8) & 0xFF)
     };
 }