diff --git a/base/stl_add.hpp b/base/stl_add.hpp
index 421cd425e4..9e100ec34d 100644
--- a/base/stl_add.hpp
+++ b/base/stl_add.hpp
@@ -82,3 +82,10 @@ template <class IterT> inline bool IsSortedAndUnique(IterT beg, IterT end)
   return IsSortedAndUnique(beg, end, less<typename iterator_traits<IterT>::value_type>());
 }
 
+struct DeleteFunctor
+{
+  template <typename T> void operator() (T const * p) const
+  {
+    delete p;
+  }
+};
diff --git a/indexer/index.hpp b/indexer/index.hpp
index 144a002bb5..2b8f8d6ed3 100644
--- a/indexer/index.hpp
+++ b/indexer/index.hpp
@@ -8,6 +8,7 @@
 #include "../geometry/rect2d.hpp"
 #include "../coding/varint.hpp"
 #include "../base/base.hpp"
+#include "../base/stl_add.hpp"
 
 #include "../std/string.hpp"
 #include "../std/vector.hpp"
@@ -65,11 +66,6 @@ public:
 
 template <class IndexT> class MultiIndexAdapter
 {
-  struct deletor_t
-  {
-    template <class T> void operator() (T * p) { delete p; }
-  };
-
 public:
   typedef typename IndexT::Query Query;
 
@@ -114,7 +110,7 @@ public:
 
   void Clean()
   {
-    for_each(m_Indexes.begin(), m_Indexes.end(), deletor_t());
+    for_each(m_Indexes.begin(), m_Indexes.end(), DeleteFunctor());
     m_Indexes.clear();
   }