diff --git a/src/xrCore/FixedSet.h b/src/xrCore/FixedSet.h
deleted file mode 100644
index ffa84d1f231..00000000000
--- a/src/xrCore/FixedSet.h
+++ /dev/null
@@ -1,222 +0,0 @@
-#ifndef _FIXEDSET_H
-#define _FIXEDSET_H
-#pragma once
-
-template <class K, class allocator = xr_allocator>
-class FixedSET
-{
-    enum
-    {
-        SG_REALLOC_ADVANCE = 64,
-        SG_REALLOC_ALIGN = 64
-    };
-
-public:
-    struct TNode
-    {
-        K key;
-        TNode *left, *right;
-    };
-    typedef void __fastcall callback(TNode*);
-
-private:
-    TNode* nodes;
-    u32 pool;
-    u32 limit;
-
-    IC u32 Size(u32 Count) { return Count * sizeof(TNode); }
-    void Realloc()
-    {
-        u32 newLimit = limit + SG_REALLOC_ADVANCE;
-        VERIFY(newLimit % SG_REALLOC_ADVANCE == 0);
-        TNode* newNodes = (TNode*)allocator::alloc(sizeof(TNode) * newLimit);
-        VERIFY(newNodes);
-
-        ZeroMemory(newNodes, Size(newLimit));
-        if (limit)
-            CopyMemory(newNodes, nodes, Size(limit));
-
-        for (u32 I = 0; I < pool; I++)
-        {
-            VERIFY(nodes);
-            TNode* Nold = nodes + I;
-            TNode* Nnew = newNodes + I;
-
-            if (Nold->left)
-            {
-                u32 Lid = u32(Nold->left - nodes);
-                Nnew->left = newNodes + Lid;
-            }
-            if (Nold->right)
-            {
-                u32 Rid = u32(Nold->right - nodes);
-                Nnew->right = newNodes + Rid;
-            }
-        }
-        if (nodes)
-        allocator:
-            dealloc(nodes);
-
-        nodes = newNodes;
-        limit = newLimit;
-    }
-    IC TNode* Alloc(const K& key)
-    {
-        if (pool == limit)
-            Realloc();
-        TNode* node = nodes + pool;
-        node->key = key;
-        node->right = node->left = 0;
-        pool++;
-        return node;
-    }
-    IC TNode* CreateChild(TNode*& parent, const K& key)
-    {
-        u32 PID = u32(parent - nodes);
-        TNode* N = Alloc(key);
-        parent = nodes + PID;
-        return N;
-    }
-
-    IC void recurseLR(TNode* N, callback CB)
-    {
-        if (N->left)
-            recurseLR(N->left, CB);
-        CB(N);
-        if (N->right)
-            recurseLR(N->right, CB);
-    }
-    IC void recurseRL(TNode* N, callback CB)
-    {
-        if (N->right)
-            recurseRL(N->right, CB);
-        CB(N);
-        if (N->left)
-            recurseRL(N->left, CB);
-    }
-
-public:
-    FixedSET()
-    {
-        pool = 0;
-        limit = 0;
-        nodes = 0;
-    }
-    ~FixedSET()
-    {
-    allocator:
-        dealloc(nodes);
-    }
-    IC TNode* insert(const K& k)
-    {
-        if (pool)
-        {
-            TNode* node = nodes;
-
-        once_more:
-            if (k < node->key)
-            {
-                if (node->left)
-                {
-                    node = node->left;
-                    goto once_more;
-                }
-                else
-                {
-                    TNode* N = CreateChild(node, k);
-                    node->left = N;
-                    return N;
-                }
-            }
-            else if (k > node->key)
-            {
-                if (node->right)
-                {
-                    node = node->right;
-                    goto once_more;
-                }
-                else
-                {
-                    TNode* N = CreateChild(node, k);
-                    node->right = N;
-                    return N;
-                }
-            }
-            else
-                return node;
-        }
-        else
-        {
-            return Alloc(k);
-        }
-    }
-    IC TNode* insertInAnyWay(const K& k)
-    {
-        if (pool)
-        {
-            TNode* node = nodes;
-
-        once_more:
-            if (k <= node->key)
-            {
-                if (node->left)
-                {
-                    node = node->left;
-                    goto once_more;
-                }
-                else
-                {
-                    TNode* N = CreateChild(node, k);
-                    node->left = N;
-                    return N;
-                }
-            }
-            else
-            {
-                if (node->right)
-                {
-                    node = node->right;
-                    goto once_more;
-                }
-                else
-                {
-                    TNode* N = CreateChild(node, k);
-                    node->right = N;
-                    return N;
-                }
-            }
-        }
-        else
-        {
-            return Alloc(k);
-        }
-    }
-    IC void clear() { pool = 0; }
-    IC TNode* begin() { return nodes; }
-    IC TNode* end() { return nodes + pool; }
-    IC TNode* last() { return nodes + limit; } // for setup only
-    IC u32 size() { return pool; }
-    IC TNode& operator[](int v) { return nodes[v]; }
-    IC void traverseLR(callback CB)
-    {
-        if (pool)
-            recurseLR(nodes, CB);
-    }
-    IC void traverseRL(callback CB)
-    {
-        if (pool)
-            recurseRL(nodes, CB);
-    }
-    IC void traverseANY(callback CB)
-    {
-        TNode* _end = end();
-        for (TNode* cur = begin(); cur != _end; cur++)
-            CB(cur);
-    }
-    IC void for_each(callback CB)
-    {
-        for (int i = 0; i < limit; i++)
-            CB(nodes + i);
-    }
-};
-#endif
diff --git a/src/xrCore/xrCore.vcxproj b/src/xrCore/xrCore.vcxproj
index e628f95a1be..8606cac79c1 100644
--- a/src/xrCore/xrCore.vcxproj
+++ b/src/xrCore/xrCore.vcxproj
@@ -478,7 +478,6 @@
     <CustomBuild Include="FileSystem.h" />
     <ClInclude Include="file_stream_reader.h" />
     <ClInclude Include="FixedMap.h" />
-    <ClInclude Include="FixedSet.h" />
     <ClInclude Include="FixedVector.h" />
     <ClInclude Include="FMesh.hpp" />
     <ClInclude Include="FS.h" />
diff --git a/src/xrCore/xrCore.vcxproj.filters b/src/xrCore/xrCore.vcxproj.filters
index 7da63141bab..d50574e608d 100644
--- a/src/xrCore/xrCore.vcxproj.filters
+++ b/src/xrCore/xrCore.vcxproj.filters
@@ -440,9 +440,6 @@
     <ClInclude Include="FixedMap.h">
       <Filter>Math\STLext</Filter>
     </ClInclude>
-    <ClInclude Include="FixedSet.h">
-      <Filter>Math\STLext</Filter>
-    </ClInclude>
     <ClInclude Include="FixedVector.h">
       <Filter>Math\STLext</Filter>
     </ClInclude>