diff --git a/src/graphics/render/BlocksRenderer.hpp b/src/graphics/render/BlocksRenderer.hpp
index 0488f0080..819e79bca 100644
--- a/src/graphics/render/BlocksRenderer.hpp
+++ b/src/graphics/render/BlocksRenderer.hpp
@@ -145,6 +145,9 @@ private:
 
     // Does block allow to see other blocks sides (is it transparent)
     bool isOpen(const glm::ivec3& pos, const Block& def, const Variant& variant) const {
+        if (pos.y >= CHUNK_H) {
+            return true;
+        }
         const auto& vox = voxelsBuffer->pickBlock(
             chunk->x * CHUNK_W + pos.x, pos.y, chunk->z * CHUNK_D + pos.z
         );
diff --git a/src/logic/scripting/lua/libs/libxml.cpp b/src/logic/scripting/lua/libs/libxml.cpp
index 139e0ee35..4aa11f3dd 100644
--- a/src/logic/scripting/lua/libs/libxml.cpp
+++ b/src/logic/scripting/lua/libs/libxml.cpp
@@ -51,7 +51,7 @@ static std::unique_ptr<xml::xmlelement> toxml(lua::State* L) {
                 break;
             }
             auto key = lua::require_lstring(L, -1);
-            if (key == "@") {
+            if (key == TAG_ATTR) {
                 break;
             }
             auto value = lua::require_lstring(L, -2);
diff --git a/src/logic/scripting/lua/usertypes/lua_type_heightmap.cpp b/src/logic/scripting/lua/usertypes/lua_type_heightmap.cpp
index 6ae6a0d8d..9926ec18e 100644
--- a/src/logic/scripting/lua/usertypes/lua_type_heightmap.cpp
+++ b/src/logic/scripting/lua/usertypes/lua_type_heightmap.cpp
@@ -128,11 +128,10 @@ static int l_noise(lua::State* L) {
                     }
 
                     float noiseValue = fnlGetNoise2D(noise, u, v);
+                    float t = 1.0f / static_cast<float>(1 << c) * multiplier;
                     if (normalizedNoise) {
-                        float t = 1.0f / (static_cast<float>(1 << c) * multiplier);
                         value = value * (1.0f - t) + noiseValue * t;
                     } else {
-                        float t = 1.0f / static_cast<float>(1 << c) * multiplier;
                         value += noiseValue * t;
                     }
                     heights[i] = value;