diff --git a/cpp/board.cpp b/cpp/board.cpp
index a5758b6..747b3d9 100644
--- a/cpp/board.cpp
+++ b/cpp/board.cpp
@@ -1,6 +1,4 @@
 #include <cctype>
-#include <ios>
-#include <iostream>
 #include <map>
 #include <string>