diff --git a/TinySTL/BinarySearchTree.h b/TinySTL/BinarySearchTree.h
index 90413e1..9326c33 100644
--- a/TinySTL/BinarySearchTree.h
+++ b/TinySTL/BinarySearchTree.h
@@ -6,7 +6,6 @@
 #include "Stack.h"
 #include "String.h"
 
-#include <deque>
 #include <set>
 
 namespace TinySTL{