diff --git a/src/mcts/allocator.hpp b/src/mcts/allocator.hpp
index f887fdc79c0ac430980c76aee6ba995e94b13200..f765282cc07ed8953538eb53062ed1f68657692a 100644
--- a/src/mcts/allocator.hpp
+++ b/src/mcts/allocator.hpp
@@ -15,7 +15,7 @@ namespace mcts
     void copy(node* n1, node* n2, unsigned int prunning = 0);
 
   public:
-    allocator(unsigned int size = 100000000U);
+    allocator(unsigned int size = 10000000U);
     ~allocator();
     node* allocate(unsigned int size);
     void clear();