diff --git a/src/history.h b/src/history.h
index b2abd9cc0..faf4af3d7 100644
--- a/src/history.h
+++ b/src/history.h
@@ -101,7 +101,7 @@ using Stats = MultiArray<StatsEntry<T, D>, Sizes...>;
 // ButterflyHistory records how often quiet moves have been successful or unsuccessful
 // during the current search, and is used for reduction and move ordering decisions.
 // It uses 2 tables (one for each color) indexed by the move's from and to squares,
-// see https://www.chessprogramming.org/Butterfly_Boards (~11 elo)
+// see https://www.chessprogramming.org/Butterfly_Boards
 using ButterflyHistory = Stats<std::int16_t, 7183, COLOR_NB, int(SQUARE_NB) * int(SQUARE_NB)>;
 
 // LowPlyHistory is adressed by play and move's from and to squares, used
@@ -118,7 +118,6 @@ using PieceToHistory = Stats<std::int16_t, 30000, PIECE_NB, SQUARE_NB>;
 // ContinuationHistory is the combined history of a given pair of moves, usually
 // the current one given a previous one. The nested history table is based on
 // PieceToHistory instead of ButterflyBoards.
-// (~63 elo)
 using ContinuationHistory = MultiArray<PieceToHistory, PIECE_NB, SQUARE_NB>;
 
 // PawnHistory is addressed by the pawn structure and a move's [piece][to]