X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fevaluate.cpp;h=6b15f6c7f0b8838b151aeba3d48380d60da34572;hb=5c5af4fa6533e22fb56dd22985cf2b3938efde6c;hp=7e4f963e3685231d3276afa713040455182fd4ee;hpb=efd21679980dfd59320a5e238f44952873353829;p=stockfish

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 7e4f963e..6b15f6c7 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -850,7 +850,7 @@ namespace {
 
         // Increase the bonus if the passed pawn is supported by a friendly pawn
         // on the same rank and a bit smaller if it's on the previous rank.
-        supportingPawns = pos.pieces(PAWN, Us) & neighboring_files_bb(s);
+        supportingPawns = pos.pieces(PAWN, Us) & neighboring_files_bb(file_of(s));
         if (supportingPawns & rank_bb(s))
             ebonus += Value(r * 20);
 
@@ -979,7 +979,7 @@ namespace {
         pliesToGo = 2 * movesToGo - int(loserSide == pos.side_to_move());
 
         // Generate list of blocking pawns and supporters
-        supporters = neighboring_files_bb(s) & candidates;
+        supporters = neighboring_files_bb(file_of(s)) & candidates;
         opposed = squares_in_front_of(loserSide, s) & pos.pieces(PAWN, winnerSide);
         blockers = passed_pawn_mask(loserSide, s) & pos.pieces(PAWN, winnerSide);