diff --git a/chess/__init__.py b/chess/__init__.py
index b74d710f..2b623a9e 100644
--- a/chess/__init__.py
+++ b/chess/__init__.py
@@ -2462,6 +2462,7 @@ def push(self, move: Move) -> None:
         from_bb = BB_SQUARES[move.from_square]
         to_bb = BB_SQUARES[move.to_square]
 
+        effective_promoted = self._effective_promoted()
         promoted = bool(self.promoted & from_bb)
         piece_type = self._remove_piece_at(move.from_square)
         assert piece_type is not None, f"push() expects move to be pseudo-legal, but got {move} in {self.board_fen()}"
@@ -2470,12 +2471,12 @@ def push(self, move: Move) -> None:
 
         # Update castling rights.
         self.castling_rights &= ~to_bb & ~from_bb
-        if piece_type == KING and not self._effective_promoted() & from_bb:
+        if piece_type == KING and not effective_promoted & from_bb:
             if self.turn == WHITE:
                 self.castling_rights &= ~BB_RANK_1
             else:
                 self.castling_rights &= ~BB_RANK_8
-        elif captured_piece_type == KING and not self._effective_promoted() & to_bb:
+        elif captured_piece_type == KING and not effective_promoted & to_bb:
             if self.turn == WHITE and square_rank(move.to_square) == RANK_8:
                 self.castling_rights &= ~BB_RANK_8
             elif self.turn == BLACK and square_rank(move.to_square) == RANK_1:
diff --git a/test.py b/test.py
index ac906638..6dda7a25 100755
--- a/test.py
+++ b/test.py
@@ -4469,6 +4469,16 @@ def test_king_promotions(self):
         self.assertEqual(board.san(d1K), "d1=K")
         self.assertEqual(board.parse_san("d1=K"), d1K)
 
+    def test_promoted_king_move_preserves_castling_rights(self):
+        board = chess.variant.SuicideBoard("6k1/8/8/8/8/8/1K~6/R3K2R w KQ - 0 1")
+        move = chess.Move.from_uci("b2b3")
+        self.assertTrue(board.is_valid())
+        self.assertIn(move, board.legal_moves)
+
+        board.push(move)
+
+        self.assertEqual(board.castling_xfen(), "KQ")
+
 
 class AtomicTestCase(unittest.TestCase):