diff --git a/gcc/CMakeLists.txt b/gcc/CMakeLists.txt
index 5b0025d..9b10168 100644
--- a/gcc/CMakeLists.txt
+++ b/gcc/CMakeLists.txt
@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 3.10)
 
 project(octree)
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++20")
+find_package(TBB REQUIRED COMPONENTS tbb)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DTBB_ENABLE_IPO=off -std=c++20")
 include_directories(../)
 add_executable(octree main.cpp)
+target_link_libraries(octree tbb)
\ No newline at end of file
diff --git a/octree.h b/octree.h
index d7f514d..cbb3825 100644
--- a/octree.h
+++ b/octree.h
@@ -862,7 +862,7 @@ namespace OrthoTree
     struct BoxDistance : ItemDistance
     {
       MortonNodeID NodeKey;
-      Node const& Node;
+      Node const& NodeReference;
     };
 
     template<typename T>
@@ -1836,11 +1836,11 @@ namespace OrthoTree
 
     using Node = typename Base::Node;
 
-    using TGeometry = typename TGeometry_;
-    using TVector = typename TVector_;
-    using TBox = typename TBox_;
-    using TRay = typename TRay_;
-    using TPlane = typename TPlane_;
+    using TGeometry = TGeometry_;
+    using TVector = TVector_;
+    using TBox = TBox_;
+    using TRay = TRay_;
+    using TPlane = TPlane_;
 
     static constexpr std::size_t DEFAULT_MAX_ELEMENT = 21;
 
@@ -2182,7 +2182,7 @@ namespace OrthoTree
           if (neighborNo <= n && rLatestNodeDist < nodeDist.Distance)
             break;
 
-          createEntityDistance(nodeDist.Node, searchPoint, points, neighborEntities);
+          createEntityDistance(nodeDist.NodeReference, searchPoint, points, neighborEntities);
           rLatestNodeDist = getFarestDistance(neighborEntities, neighborNo);
         }
       }
@@ -2223,11 +2223,11 @@ namespace OrthoTree
 
     using Node = typename Base::Node;
 
-    using TGeometry = typename TGeometry_;
-    using TVector = typename TVector_;
-    using TBox = typename TBox_;
-    using TRay = typename TRay_;
-    using TPlane = typename TPlane_;
+    using TGeometry = TGeometry_;
+    using TVector = TVector_;
+    using TBox = TBox_;
+    using TRay = TRay_;
+    using TPlane = TPlane_;
 
     static constexpr std::size_t DEFAULT_MAX_ELEMENT = 21;
 
@@ -3249,7 +3249,7 @@ namespace OrthoTree
       }
 
       for (autoc& nodeDistance : nodeDistances)
-        getRayIntersectedFirst(nodeDistance.Node, boxes, rayBasePoint, rayHeading, tolerance, foundEntities);
+        getRayIntersectedFirst(nodeDistance.NodeReference, boxes, rayBasePoint, rayHeading, tolerance, foundEntities);
     }