diff --git a/lib/Default/ChessPiece.class.php b/lib/Default/ChessPiece.class.php
index f5539b192..9074d7ded 100644
--- a/lib/Default/ChessPiece.class.php
+++ b/lib/Default/ChessPiece.class.php
@@ -52,9 +52,9 @@ public function isSafeMove(array &$board, &$hasMoved, $toX = -1, $toY = -1) {
 	}
 	
 	public function isAttacking(array &$board, array &$hasMoved, $king, $x = -1, $y = -1) {
-		$moves =& $this->getPossibleMoves($board, $hasMoved, null, true);
-		foreach($moves as &$move) {
-			$p =& $board[$move[1]][$move[0]];
+		$moves = $this->getPossibleMoves($board, $hasMoved, null, true);
+		foreach($moves as $move) {
+			$p = $board[$move[1]][$move[0]];
 			if(($move[0] == $x && $move[1] == $y) || ($king === true && $p != null && $p->pieceID == self::KING && $this->colour != $p->colour)) {
 				return true;
 			}
@@ -62,7 +62,7 @@ public function isAttacking(array &$board, array &$hasMoved, $king, $x = -1, $y
 		return false;
 	}
 
-	public function &getPossibleMoves(array &$board, array &$hasMoved, $forAccountID = null, $attackingCheck = false) {
+	public function getPossibleMoves(array &$board, array &$hasMoved, $forAccountID = null, $attackingCheck = false) {
 		$moves = array();
 		if ($forAccountID == null || $this->accountID == $forAccountID) {
 			if ($this->pieceID == self::PAWN) {