diff --git a/src/frontend/debug_panel.cpp b/src/frontend/debug_panel.cpp
index 106f8322..b854fce4 100644
--- a/src/frontend/debug_panel.cpp
+++ b/src/frontend/debug_panel.cpp
@@ -74,21 +74,25 @@ std::shared_ptr<UINode> create_debug_panel(
     }));
     panel->add(create_label([=](){
         auto* indices = level->content->getIndices();
-        auto def = indices->getBlockDef(player->selectedVoxel.id);
         std::wstringstream stream;
         stream << "r:" << player->selectedVoxel.state.rotation << " s:"
                << player->selectedVoxel.state.segment << " u:"
                << std::bitset<8>(player->selectedVoxel.state.userbits);
-        if (def) {
-            stream << L" (" << util::str2wstr_utf8(def->name) << L")";
-        }
         if (player->selectedVoxel.id == BLOCK_VOID) {
-            return std::wstring {L"block: none"};
+            return std::wstring {L"block: -"};
         } else {
             return L"block: "+std::to_wstring(player->selectedVoxel.id)+
                 L" "+stream.str();
         }
     }));
+    panel->add(create_label([=](){
+        auto* indices = level->content->getIndices();
+        if (auto def = indices->getBlockDef(player->selectedVoxel.id)) {
+            return L"name: " + util::str2wstr_utf8(def->name);
+        } else {
+            return std::wstring {L"name: void"};
+        }
+    }));
     panel->add(create_label([=](){
         return L"seed: "+std::to_wstring(level->getWorld()->getSeed());
     }));
diff --git a/src/voxels/voxel.hpp b/src/voxels/voxel.hpp
index d7062b36..9cfaf698 100644
--- a/src/voxels/voxel.hpp
+++ b/src/voxels/voxel.hpp
@@ -12,7 +12,7 @@ inline constexpr int BLOCK_DIR_DOWN = 0x5;
 
 struct blockstate {
     uint8_t rotation : 3;
-    uint8_t segment : 2;
+    uint8_t segment : 2; // planned to 0.22
     uint8_t reserved : 3;
     uint8_t userbits : 8;
 };
@@ -38,5 +38,6 @@ struct voxel {
     blockid_t id;
     blockstate state;
 };
+static_assert(sizeof(voxel) == 4);
 
 #endif // VOXELS_VOXEL_HPP_