diff --git a/src/voxels/voxel.hpp b/src/voxels/voxel.hpp
index dcff106f..a54f5015 100644
--- a/src/voxels/voxel.hpp
+++ b/src/voxels/voxel.hpp
@@ -16,22 +16,34 @@ struct blockstate {
     uint8_t userbits : 8;  // bits for use in block script
 };
 static_assert(sizeof(blockstate) == 2);
+static_assert(alignof(blockstate) == 1);
+static_assert(sizeof(blockstate) == sizeof(blockstate_t));
 
 /// @brief blockstate cast to an integer (optimized out in most cases)
+#ifdef _WIN32
+inline blockstate_t blockstate2int(blockstate b) {
+    return *reinterpret_cast<blockstate_t*>(&b);
+#else
 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) << 6 |
            static_cast<blockstate_t>(b.userbits) << 8;
+#endif
 }
 
 /// @brief integer cast to a blockstate (optimized out in most cases)
+#ifdef _WIN32
+inline blockstate int2blockstate(blockstate_t i) {
+    return *reinterpret_cast<blockstate*>(&i);
+#else
 inline constexpr blockstate int2blockstate(blockstate_t i) {
     return {
         static_cast<uint8_t>(i & 0b111),
         static_cast<uint8_t>((i >> 3) & 0b111),
         static_cast<uint8_t>((i >> 6) & 0b11),
         static_cast<uint8_t>((i >> 8) & 0xFF)};
+#endif
 }
 
 struct voxel {