diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index daf0c1d7..34ec4890 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -127,7 +127,7 @@ namespace {
 
   // RookOnFile[semiopen/open] contains bonuses for each rook when there is
   // no (friendly) pawn on the rook file.
-  constexpr Score RookOnFile[] = { S(20, 7), S(45, 20) };
+  constexpr Score RookOnFile[] = { S(18, 7), S(44, 20) };
 
   // ThreatByMinor/ByRook[attacked PieceType] contains bonuses according to
   // which piece type attacks which one. Attacks on lesser pieces which are
@@ -165,13 +165,13 @@ namespace {
   constexpr Score MinorBehindPawn    = S( 16,  0);
   constexpr Score Overload           = S( 13,  6);
   constexpr Score PawnlessFlank      = S( 19, 84);
-  constexpr Score RookOnPawn         = S( 10, 30);
+  constexpr Score RookOnPawn         = S( 10, 29);
   constexpr Score SliderOnQueen      = S( 42, 21);
   constexpr Score ThreatByKing       = S( 22, 78);
   constexpr Score ThreatByPawnPush   = S( 45, 40);
   constexpr Score ThreatByRank       = S( 16,  3);
   constexpr Score ThreatBySafePawn   = S(173,102);
-  constexpr Score TrappedRook        = S( 92,  0);
+  constexpr Score TrappedRook        = S( 96,  5);
   constexpr Score WeakQueen          = S( 50, 10);
   constexpr Score WeakUnopposedPawn  = S( 15, 19);
 
diff --git a/src/psqt.cpp b/src/psqt.cpp
index 934f9898..c9065cbe 100644
--- a/src/psqt.cpp
+++ b/src/psqt.cpp
@@ -67,7 +67,7 @@ constexpr Score Bonus[][RANK_NB][int(FILE_NB) / 2] = {
    { S(-47,-55), S( -7,-32), S(-17,-36), S(-29,-17) }
   },
   { // Rook
-   { S(-25, 0), S(-16, 0), S(-16, 0), S(-9, 0) },
+   { S(-25, 0), S(-16, 0), S(-10, 5), S( 6, 5) },
    { S(-21, 0), S( -8, 0), S( -3, 0), S( 0, 0) },
    { S(-21, 0), S( -9, 0), S( -4, 0), S( 2, 0) },
    { S(-22, 0), S( -6, 0), S( -1, 0), S( 2, 0) },