diff --git a/Runtime/Collision/CCollidableOBBTree.cpp b/Runtime/Collision/CCollidableOBBTree.cpp
index 2b67d0506..9d2fbd758 100644
--- a/Runtime/Collision/CCollidableOBBTree.cpp
+++ b/Runtime/Collision/CCollidableOBBTree.cpp
@@ -12,7 +12,7 @@ namespace urde {
 u32 CCollidableOBBTree::sTableIndex = 0;
 
 CCollidableOBBTree::CCollidableOBBTree(const COBBTree* tree, const urde::CMaterialList& material)
-: CCollisionPrimitive(material), x10_tree((COBBTree*)tree) {}
+: CCollisionPrimitive(material), x10_tree(tree) {}
 
 bool CCollidableOBBTree::LineIntersectsLeaf(const COBBTree::CLeafData& leaf, CRayCastInfo& info) const {
   bool ret = false;
diff --git a/Runtime/Collision/CCollidableOBBTree.hpp b/Runtime/Collision/CCollidableOBBTree.hpp
index 25993d3c2..9a8f58e9d 100644
--- a/Runtime/Collision/CCollidableOBBTree.hpp
+++ b/Runtime/Collision/CCollidableOBBTree.hpp
@@ -31,7 +31,7 @@ public:
 
 class CCollidableOBBTree : public CCollisionPrimitive {
   friend class CCollidableOBBTreeGroup;
-  COBBTree* x10_tree = nullptr;
+  const COBBTree* x10_tree = nullptr;
   u32 x14_tries = 0;
   u32 x18_misses = 0;
   u32 x1c_hits = 0;