diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 02d740ec..a06fcabd 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -690,7 +690,7 @@ Value do_evaluate(const Position& pos, Value& margin, Info& ei) {
     Score score = mobility = SCORE_ZERO;
 
     // Do not include in mobility squares protected by enemy pawns or occupied by our pieces
-    const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us));
+    const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us, PAWN, KING));
 
     score += evaluate_pieces<KNIGHT, Us, Trace>(pos, ei, mobility, mobilityArea);
     score += evaluate_pieces<BISHOP, Us, Trace>(pos, ei, mobility, mobilityArea);