diff --git a/BitBoard.h b/BitBoard.h
index d245764..4679fe2 100644
--- a/BitBoard.h
+++ b/BitBoard.h
@@ -63,11 +63,12 @@ public:
 
     constexpr void clear(unsigned i);
     constexpr void set(unsigned i);
+
     BitBoard left(unsigned i) const;
     BitBoard right(unsigned i) const;
+
     static BitBoard fromIndex(unsigned i);
 
-    static BitBoard genShift(BitBoard x, int s);
     static BitBoard getRank(int r);
 
     // Returns the number of trailing 0-bits in b.
@@ -77,6 +78,7 @@ public:
 private:
     U64 mBoard = {};
 
+    static BitBoard genShift(BitBoard x, int s);
 };
 
 // Relational operators
diff --git a/Board.hpp b/Board.hpp
index 9462616..085c37a 100644
--- a/Board.hpp
+++ b/Board.hpp
@@ -13,10 +13,6 @@
 
 #define BB_NUM 8 // 6 pieces, 2 colors
 
-enum class BoardIndex {
-
-};
-
 class Board {
 public: