  function modifySAFECollateralization(
    uint256 _safe,
    int256 _deltaCollateral,
    int256 _deltaDebt
  ) external safeAllowed(_safe) {
+   ODSafeManager.SAFEData memory _safeInfo = _safeData[_safe];
+   ITaxCollector(_taxCollector).taxSingle(_safeInfo.collateralType);
    SAFEData memory _sData = _safeData[_safe];
    ISAFEEngine(safeEngine).modifySAFECollateralization(
      _sData.collateralType, _sData.safeHandler, _sData.safeHandler, _sData.safeHandler, _deltaCollateral, _deltaDebt
    );
    emit ModifySAFECollateralization(msg.sender, _safe, _deltaCollateral, _deltaDebt);
  }
