X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=86f73563ef262a9e2914597320b0adfef8818e59;hp=dff84df3750e29ea5217000d6374109ad7fc1d0b;hb=c645587270c2b08d327d290d0ae3c3f5e0a30eee;hpb=190f38a7c2a64f7e89f06871533d87ba7b287fdc

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index dff84df3..86f73563 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -357,8 +357,8 @@ namespace {
                 score += RookOnPawn * popcount(pos.pieces(Them, PAWN) & PseudoAttacks[ROOK][s]);
 
             // Bonus for rook on an open or semi-open file
-            if (pos.is_semiopen_file(Us, file_of(s)))
-                score += RookOnFile[bool(pos.is_semiopen_file(Them, file_of(s)))];
+            if (pos.is_on_semiopen_file(Us, s))
+                score += RookOnFile[bool(pos.is_on_semiopen_file(Them, s))];
 
             // Penalty when trapped by the king, even more if the king cannot castle
             else if (mob <= 3)